Pro-Tek 48290 G3 Chuck Kit with 1" x 8tpi Insert Adapter (with set screw for reverse turning) Rust resistant nickel plating Pro-Tek 2″ jaws with dovetail and serrated inner face Now with intuitive clockwise tightening & updated chuck key 6 point star head jaw screws for better holding power and quicker fastening, & T-handled 6 point wrench for faster jaw changes Sturdy slip cover packaging with foam liner for durable chuck storage box Includes Nova woodworm screw Comes with Nova microfiber polishing cloth for keeping your chuck clean. Copper infused jaw slides