Sizes: small- 1.5mm, 2.0mm, 2.5mm, 3.0mm, 4.0mm, 5.0mm, 6.0mm – Ergonomic unique middle concave grave design, thumb can place in it for convenient operation – Heating treatment, high hardness; Large torque, firm and durable Quantity: 1 pcs Form Color: Blue Silver Material: Aluminum steel Weight: small-100g large-160g Packing List: 1 x set of allen wrenches
