McKissick Utility Crane Block, Mediumweight, Series: 380 Easy Reeve, 9/16 in, 5/8 in, 3/4 in, 7/8 in Maximum Cable, 55 ton, 16 in Sheave Outside Dia, Roller Bearing, Roll Forged Sheave, 4 Grooves, 61.75 in L x 20.5 in W x 15.31 in THK