A Set of 4 Perry 5" Scaffolding Wheels with 1" Solid Round Stem * Include 4 Spring Lock Pins, The Wheel Swivel 360 degree * Equipped with step scaffold wheel locking double brakes * 1" Solid Round Stem Lock pin at 2 1/2" holes center * IF YOU HAVE ANY QUESTIONS PLEASE CLICK ON (CBM1290) then RETURNS.