Description: Fitment:Fit for go kart cart drift trike mini bike dune buggy quad ATVs, 3/4" rear axle round rod. Model: 4.5 Inch Brake Band;60"Housing / 65" Cable;4.5 Inch Brake drum;3/4" Bore 3/16". Easy to Install:The brake drum has universal mounting hole pattern with both 5/16" & 3/8"bolt holes,those 8 bolt holes will match those on you wheel brake hub.There is a hole on either end of the brake band.One end fastens to a stud mounted on the cart, but is still able to pivot,and the other end fastens to your brake rod.Align the key ways in the sprocket and then bolt a sprocket to it,and axle install a key in the key way in the sprocket and in the axle shaft then tighten the set screws. Material:The sprocket brake bub is made of high quality 45# steel material. Nicely balanced,stronger and more durable to use. Package include:1 x brake drum,1 x brake band,1 x brake pin,1 x brake cable,1 x sprocket hub,4 x Screw,4 x nut.