KDT80574 Features: -Patented bit holding system forces bit surface to opposing side for maximum bit retention - strength. -Packaged in patented impact resistant "slide rail" system. -Heat treated socket bases for durability and service ability. -Chrome sockets; S2 and alloy steel bits. Generic Dimensions: -Product weight: 1.13 lbs. Dimensions: Overall Product Weight: -1.13 Pounds.