The 664  Workbench Clamping Kit is a functional accessory for Duratec quick bar clamps. It is designed to fit multifunction worktables with 20‑mm diameter holes for vertical mounting. 

Compatible with the 661‑60 series clamps, this accessory features swiveling jaws for irregular‑shaped workpieces and can couple two bar clamps together to secure large‑size workpieces, greatly expanding clamping flexibility for woodworking assembly and gluing work.