Salsa battery mounting hardware. Salsa Battery Mounting Hardware for XS and SM Tributary 1.0 carbon frames Includes upper and lower battery mounting frame hardware, M5 x 0.8 x 10L T25 socket-head screws, M5 x 0.8 x 16L T25 socket-head screws, and upper mount washers Fits size XS and SM Tributary 1.0 carbon frames with Bosch BES 3 BDU smart system