Gross Stabil KF2 Replacement Jaws, Set- left and right Designed to clamp materials 1/4" to 1-7/8" thick Large plastic swivel end cap provides scratch protection Frame made of aluminum die-cast materials for superior strength Heavy duty galvanized steel threaded spindle provides positive clamping pressure Rotating heads are rubber lined for scratch resistance and non-slip feature Molded wooden and painted handle fits comfortably in your hand