1 8 x 2 5 x 16 July 8, 2019 16 32 64 128 3 1 8 x 2 5 16 8 x 5 * 2 x 1 16 * 2 x 0 16 1 5 x 2 x 8 3 4 1 2 x 1 1 8 x 5 16 bearing Screw shoulder 3 8 x 2 1 2 x 5 16 18 16 ×2=8
