please note: The bigger three allen bolts diameter is 10mm
Does not works with 9 hole and 6 hole sprocket.
Only fit spoke wheel bicycle, 2pcs screw 12.9Grade/W3/8-16X1" 3pcs screw 10.9Grade/W5/16-18X1"
the Adapter fits 1 inch rear hub of SPOKE WHEEL BIKE with a diameter of 1"to 1.02" (FOR SPOKE WHEEL BIKE ONLY)
This 1" rear hub adapter is compatible with CDHPOWER multifunctional sprocket 32T,36T,40T,56T and also compatible with CDHPOWER cnc 40T and 44T sprocket.