Yoke allows two or three hole applications Alloy steel center screw with floating, removable swivel Applies even pressure to balancer, preventing damage Drop forged, heat treated carbon steel Includes 5 alloy steel pressure screw 3/4x16 thread, alloy steel yoke, (2) centering adapters, flat shaft adapter, (3) 1-1/2 bolts 3/8x24 thread, (2) 4-1/2 bolts 3/8x16 thread, (3) 3-1/2 bolts 5/16x18 thread, (2) 2-1/2 bolts 1/4x28 thread, (3) 3 bolts 3/8x16 thread, (2) 6 bolts 5/16x18 thread, (2) 3 bolts 5/16x24 thread, (3) 45mm bolts M8x1.25mm, (2) 90mm bolts M8x1/.25mm, (3) 35 mm bolts M10x1.5mm, (2) 65mm bolts M8x1.25mm, and (6) washers in blow molded storage case