GT engraved chainwheel/chainring nuts and bolts. These will fit, SUGINO, Takagi, SR SAKAE, Shimano and many other old school spiders and Chainwheels These are Vintage new (not repops, not remanufactured) these came from a bike shop closed in 1988. These have the correct offset bolts so when tightened down the chainwheel and spider will be tight together. These are also the correct diameter so the chainwheel won’t be sloppy and can’t move around. Chrome looks great.