Set includes: 11 PCS Hex Shank Socket Adapters : 1/4" Dr. 25mm 30mm 50mm 65mm 150mm ; 3/8" Dr. 50mm 65mm 150mm ; 1/2" Dr. 50mm 72mm 150mm ; 6 PCS Socket Adapters: 1/4"F x 3/8"M, 3/8"F x 1/4"M, 3/8"F x 1/2"M, 1/2"F x 3/8"M, 1/2"F x 3/4"M, 3/4"F x 1/2"M. 3 PCS Universal Joints (Cr-Mo): 1/4" 3/8" 1/2".