7/8″ T-slot Large Universal Adjustable Clamp Set ~ One piece forged steel heads, fully heat treated. ~ Allows for quick set-up on a mill table with T-slot. ~ Instant height adjustment. ~ Self-positioning. ~ Hinged swivel rocker. ~ Size of Head is 6.0 x 2.3″. ~ Clamping range is up to 5″. ~ Load limit is 24,000 lbs. ~ Sold in a pair. One piece forged steel heads, fully heat treated. Allows for quick set-up on a mill table with T-slot. Instant height adjustment. Self-positioning. Hinged swivel rocker.