Jorgensen 2-pack Medium Duty Steel Bar Clamp Set with 600 lbs Load limit 24-inch

Sliding-Head Design - The sliding head is threaded to accommodate the screw. Strong, light-weight steel bars are rust-resistant. Multiple-Disc-Clutch holds securely at any point along the bar. Feature - Rust resistant zinc plated steel bar; Sliding head with multiple disc-clutch holds work securely; New comfort grip handle with fast moving screw.