Heavy duty 4-way slotted yoke. 3, Hardened forcing screws 3-3/4" and 6-1/2" long. Includes 11 sets of washer head bolts (listed below). Included in a blow-molded case Designed for use on harmonic balancers, crankshaft pulleys, steering wheels and gear pulleys. Also can be used on tapped flywheels of electric or two-cycle motors. The following sets of washer head bolts are included: 2, 1/4"-28 UNF x 3", 3, 5/16"-18 UNC x 2", 3, 5/16"-18 UNC x 4-1/2",  2, 5/16"-24 UNF x 3-1/2", 3, 3/8"-16 UNC x 4", 3, 3/8"-24 UNF x 2", 3, 3/8"-16 UNF x 2", 3, 8mm x 1.25 x 80mm, 3, 8mm x 1.25 x 40mm, 2, 8mm x 1.25 x 65mm, 3, 10mm x 1.50 x 50mm.