Rigid RHSC-20 Spare Tire Carrier - Made in USA Fits trailer frames up to 3 inches wide x 4 inches high For use with 4 or 5 bolt trailer tire rims only! Fits 4-bolt on 4" bolt centers, 5-bolt on 4-1/2" bolt centers or 5-bolt on 5" bolt centers - Will not work with 6 or 8 bolt rims. Accepts trailer wheel sizes from 8 to 15 inch Product cannot be used with 18.5 x 8.5 or 20.5 x 8 tires. Black powder coat finish