... production experience. closed round rubber, with teeth and Timing BeltFeatures: 1) Time belt type: 9.5X, AX, BX, CX, DXType: 9 ... .5X, AX, BX, CX, DX, AV12,AV12.5,R(MR), Y(MY), ZBS, YU, RU, ZA, FS, ZD, ZR, ZAS ... of ISO9001:2000,ISO9002,GB/T,etc.Type: R(MR), Y(MY), ZBS, YU, RU, ZA, FS, ZD, ZR, ZAS, ZB ...