MCS Single / Double Chromoly BMX Chainring Bolts - Black Yellow Stripe The Profile Imperial Sprocket has

The Profile Imperial Sprocket has a 22mm bore

With the included training wheels in place

slimmer height and more concave while still being built around a traditional loose-ball bearing configuration

Rims: Alloy

The tread pattern is IA-2128

MCS Single / Double Chromoly BMX Chainring Bolts - Black Yellow Stripe The Profile Imperial Sprocket hasMCS Chromoly Chainring Bolts deliver versatile compatibility for single and double chainring setups. Built from durable chromoly material, these bolts feature a distinctive laser etched MCS logo and come in a complete assortment: five 8. 5mm front bolts, five 6. 5mm front bolts, and five 4mm rear boltseverything you need for a full chainring rebuild or replacement. Set Includes: (5) 8. 5mm front (5) 6. 5mm front (5) 4mm rear Color: Black