. The Revolving Loans, including all outstanding principal and accrued interest, shall be indefeasibly paid in full and the Revolving Loan Commitment shall terminate on the Revolving Loan Maturity Date.

Revolving Credit Loan. The undersigned Borrower on behalf of all Borrowers hereby requests a Revolving Credit Loan under §2.7 of the Credit Agreement:

Revolving Credit Loan. From time to time prior to July 28, 2022 (“Maturity Date”) or the earlier termination hereof, Borrower may borrow from Bank for general and working capital purposes an aggregate amount outstanding at any one time of the lesser of # $3,000,000.00 (the “Loan Amount”), or # if applicable, the Borrowing Base (“Revolving Credit Loan”). The Revolving Credit Loan will be evidenced by a promissory note of Borrower payable to the order of Bank in the principal amount of the Loan Amount (the “Note”). Although the Note will be expressed to be payable in the full Loan Amount, Borrower will be obligated to pay only the amounts actually disbursed hereunder, together with accrued interest on the outstanding balance at the rates and on the dates specified therein and such other charges provided for herein.

Except as otherwise provided herein, the Borrower may from time to time prior to the end of the Availability Period request the Lender to make Revolving Credit Loans, or renew or convert the Interest Rate Option applicable to existing Revolving Credit Loans pursuant to Section 4.2 [Interest Periods], by delivering to the Lender, not later than 10:00 a.m., # two (2) Business Days, or such shorter period as may be agreed to by the Lender, prior to the proposed Borrowing Date with respect to the making of Revolving Credit Loans to which the LIBOR Rate Option applies or the conversion to or the renewal of the LIBOR Rate Option for any Loans; and # the same Business Day of the proposed Borrowing Date with respect to the making of a Revolving Credit Loan to which the Base Rate Option applies or the last day of the preceding Interest Period with respect to the conversion to the Base Rate Option for any Loan, of a duly completed request therefor substantially in the form of [Exhibit 2.5].1 or a request by telephone immediately confirmed in writing by letter, facsimile or telex in such form (each, a "Loan Request"), it being understood that the Lender may rely on the authority of any individual making such a telephonic request without the necessity of receipt of such written confirmation. Each Loan Request shall be irrevocable and shall specify the aggregate amount of the proposed Loans comprising each Borrowing Tranche, and, if applicable, the Interest Period, which amounts shall be in # integral multiples of $50,000 and not less than $100,000 for each Borrowing Tranche under the LIBOR Rate Option, and # integral multiples of $1,000 and not less than $50,000 for each Borrowing Tranche under the Base Rate Option.

Except as otherwise provided herein, TGI, on behalf of the Borrowers may from time to time prior to the Expiration Date request the Banks to make Revolving Credit Loans, or renew or convert the Interest Rate Option applicable to existing Revolving Credit Loans pursuant to Section 4.3, by delivering to the Administrative Agent, not later than # 2:00 p.m., Pittsburgh time, three (3) Business Days prior to the proposed Borrowing Date with respect to the making of Revolving Credit Loans to which the Euro-Rate Option applies or the date of conversion to or the renewal of the Euro-Rate Option for any such Loans; and # 10:30 a.m., Pittsburgh time on either the proposed Borrowing Date with respect to the making of a Revolving Credit Loan to which the Base Rate Option applies or the last day of the preceding Interest Period with respect to the conversion to the Base Rate Option for any Loan to which the Euro-Rate Option applies, of a duly completed request therefor substantially in the form of [Exhibit 2.4] or a request by

Revolving Credit Loan. The undersigned Borrower hereby requests a Revolving Credit Loan under §2.7 of the Credit Agreement:

Revolving Loan. Subject to the terms and provisions of the Credit Agreement, Maker may use all or any part of the credit provided to be evidenced by this note at any time before the Revolving Maturity Date. Maker may borrow, repay and reborrow hereunder, and except as set forth in the Credit Agreement there is no limitation on the number of advances made hereunder.

Revolving Credit Loan. The undersigned Borrower on behalf of all Borrowers hereby requests a Revolving Credit Loan under §2.7 of the Credit Agreement:

. Except as otherwise provided herein, the Borrower may from time to time prior to the Expiration Date request the Lenders to make Revolving Credit Loans, or renew or convert the Interest Rate Option applicable to existing Revolving Credit Loans or Term Loans pursuant to Section 4.2 [Interest Periods], by delivering to the Administrative Agent, not later than 12:00 p.m., # three (3) Business Days prior to the proposed Borrowing Date with respect to the making of Revolving Credit Loans in Dollars to which the Euro-Rate Option applies or the conversion to or the renewal of the Euro-Rate Option for any Loans in Dollars; # four (4) Business Days prior to the proposed Borrowing Date with respect to the making of Optional Currency Loans or the date of conversion to or renewal of the Euro-Rate Option for any Optional Currency Loan; and # the same Business Day of the proposed Borrowing Date with respect to the making of a Revolving Credit Loan to which the Base Rate Option applies or the last day of the preceding Interest Period with respect to the conversion to the Base Rate Option for any Loan, of a duly completed request therefor substantially in the form of [Exhibit 2.5].1 or a request by telephone immediately confirmed in writing by letter, facsimile or telex in such form (each, a “Loan Request”), it being understood that the Administrative Agent may rely on the authority of any individual making such a telephonic request without the necessity of receipt of such written confirmation. Each Loan Request shall be irrevocable and shall specify # the aggregate amount of the proposed Loans (expressed in the currency in which such Loans shall be funded) comprising each Borrowing Tranche, and, if applicable, the Interest Period, which amount shall be in # integral multiples of $500,000 (or the Dollar Equivalent thereof) and not less than $1,000,000 (or the Dollar Equivalent thereof) for each Borrowing Tranche under the Euro-Rate Option, and # not less than the lesser of $100,000 or the maximum amount available for Borrowing Tranches to which the Base Rate Option applies, # whether the Euro-Rate Option or Base Rate Option shall apply to the proposed Loans comprising the applicable Borrowing Tranche, # the currency in which such Revolving Credit Loans shall be funded if the Borrower elects the Euro-Rate Option, and # in the case of a Borrowing Tranche to which the Euro-Rate Option applies, an appropriate Interest Period for the Loans comprising such Borrowing Tranche. No Optional Currency Loan may be converted into a Base Rate Loan or a Loan denominated in a different Optional Currency.

. Lender agrees to extend the Revolving Loan to Borrower in accordance with the terms of, and subject to the conditions set forth in, this Agreement, the Revolving Note and the other Loan Documents. All sums advanced and outstanding from time to time under any Revolving Loan shall bear interest per annum at a rate equal to either # the LIBOR Rate plus 195 basis points, or # the Prime Rate minus 75 basis points, floating. Notwithstanding anything herein to the contrary, in no event shall the interest rate in option # or option # be less than two and 25/100ths percent (2.25%) per annum. Borrower shall communicate to the Lender not less than three (3) Business Days prior to the commencement of an Interest Period whether Borrower elects to utilize option # or option # for the upcoming Interest Period and if Borrower fails to deliver notice of Borrower’s election to Lender not less than three (3) Business Days prior to the commencement of an Interest Period, all such borrowings shall be treated as an election by Borrower to utilize option (b). The unpaid principal balance plus all accrued but unpaid interest on the Revolving Loan shall be due and payable on the Revolving Loan Maturity Date in accordance with the terms of the Revolving Note and this Agreement.”.