Snap-Lock Technology allows jaws to install in about 30 seconds! Works only with the genuine Easy Chuck. Easy Chuck not included. Sold only one set of 4 jaws. Easy Chuck not included. Includes: Easy Base Jaws, Jaw Plates, Easy Dovetail Grippers, 5/32" T-handle hex wrench Please visit and shop our complete line of tools and accessories on our AMAZON STORE – just click on “Visit the EASY WOOD TOOLS Store” listed under the TITLE of this product. Designed and Manufactured 100% in the USA, Weight: 5.4674640976 pounds, Manufacturer: Easy Wood Tools