M18 M20 BMX MTB Road Bike Crank Cover Screw Cap bicycle Spare Parts

[Feature of product]
● Aluminum alloy CNC machining, precision & strength, much better than the original plastic screws.
● Various colors, suitable for personality modification.
[Product parameters]
The Iamok 20MM tooth screw is suitable for SHIMANO and the same hollow sprocket wheel with the same specifications as SHIMNAO,such as the M590 M596 M661 SLX XT XTR.
The 18MM tooth screw is suitable for the hollow hollow one sprocket wheel, the FS.A sprocket wheel and the old FC-4500 and FC-5600 road sprocket wheel, so we have to measure the threaded hole of our own tooth plate before buying.