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The Advanced Photon Source Upgrade Project (UPS-U) is planning a storage-ring upgrade that will reduce the electron-beam emittance by a factor of ~75. This ultra-low emittance is achieved by replacing... The Advanced Photon Source Upgrade Project (UPS-U) is planning a storage-ring upgrade that will reduce the electron-beam emittance by a factor of ~75. This ultra-low emittance is achieved by replacing the present storage ring lattice with a multi-bend achromat (MBA) lattice. The MBA lattice will increase the coherent x-ray fraction by two orders of magnitude and decrease the horizontal source size by a factor of ~20. In addition, the APS-U is planning to build eight new featured beamlines and make optics upgrades to many others. BUILD TO PRINT - This SOW describes the requirements for endstation bendable KB mirrors to be installed on APS-U insertion-device beamlines. A reference paper (Reference paper_bender mirror.pdf) of an in-house bender mirror design is attached to the SOW. A pair of bendable KB mirrors consists of two polished mirror substrates with optical coatings and the bonded adaptor plates for the bender assembly. Each sector has an associated Appendix that describes detailed specifications of the mirror shapes, dimensions, orientations, materials, and figure errors.This scope contains a total of 6 flat mirror substrates for 3 bendable KB mirror pairs. The endstation KB mirror pairs as a function of beamline. The mirror pairs are designated using the following code QID-KB-X-YZ, where Q is the Sector number 8, 9, or 34; KB stands for KB mirror; X is the mirror pair index; Y defines vertical or horizontal deflection and its direction U (vertical up), D (vertical down), I (horizontal inboard), or O (horizontal outboard); and Z denotes the prefiguring of the mirror substrate, which is always F (flat and bendable) in the SOW.