Bit Socket Set 107-Piece SAE and Metric Hex/Torx/E-Torx/Tamper-Proof/Extra Long One Set Covers All Needs Crafted from Alloy Steel Efficient Operation Comes with a Storage Case Wide Range of Applications Versatile Applications Case Color: Black,Main Materials: S2 (Bits) + CRV 50BV30 (Sockets),Bits Hardness: 56-62 HRC,Sockets Hardness: 38-42 HRC,Item Model Number: 107PCS 107 THE,Product Configuration: 107PCS Bit Set,Case Material: PE,Net Weight: 13.67 lbs / 6.2 kg,Case Dimensions: 15.35 x 11.81 x 3.43 inch / 390 x 300 x 87 mm