Features: Multifunctional, Mini, Explosion-proof, Double-ended, Anti-slip, Bionic, Anti-magnetic Type: Socket Wrench High Quality Pneumatic Sleeve Name: Sleeve Adapter Hardness: (HRC) 40 + / - 2 3/8 Hole 1/4 Head: 18g 1/4 Hole 3/8 Head: 18g 3/8 Hole 1/2 Head: 43g 1/2 Hole 3/8 Head: 47g 3/4 Hole 2/1 Head: 253g 1/2 Hole 3/4 Head: 136g Color: Black & Red Material: Steel Size: 36x58mm / 25x50mm / 21x38mm / 17x38mm / 16x25mm / 14x25mm Package Contents: 12 x Mini Double Wrench Hand Tool Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.