Grey Pneumatic 81659CRD 3/8" Drive 59pc Standard/Deep Length Fractional and Metric Duo-Socket Set - 6 P Sockets have 3/8 inch drive and are 6 point All Duo-Socket sockets are marked by both roll stamp and large laser etching on the opposite side The ratchet included is a 72 tooth quick release Two extensions : Fractional sizes 5/16" to 1" and metric sizes 7mm to 22mm Packaged in blow molded case Set Contains 59 Pieces; 3/8" Dr. 59pc Fract. & Metric Duo-Socket Set - 6 Pt.; Molded Storage Case; Weight: 12.79 lbs