The purpose of this solicitation is for the purchase and delivery of a balance block. The balance block shall reference Attachment (Atch) 1 – Balance Block Drawing 1 (AEDC drawing #PG630165) and Atch 2 – Balance Block Drawing 2 (Balance Microcraft drawing # WT-98-13586, Rev A). The balance block shall be the same as Atch 1- Balance Block Drawing (AEDC drawing #PG630165), except the inner land surfaces diameters shall match the balance outside diameters of Atch 2 – Balance Block Drawing (Microcraft drawing #WT-98-13586 Rev A). Material to make the balance block must match the material properties of the previously used Nationally #14. The vendor shall provide all material and heat treat certifications, and all inspection reports and documentation. Please see the attachments for additional details.