Description: Premium quality #45 steel material, special heat treatment, high hardness, durable toughness. Precision spanner wrench, great for professionals and hobbyists demanding ease of operation and high quality work results. A great auxiliary tool for turning nut or , widely used for vehicle repair, machinery repair, etc. Hardness, wearproof, and durable, perfect for equipment installation, debugging, maintain and overhaul working. Easy to operate, 2 sizes for you, practical and convenient for use. Specification: Material: Steel Head Shape: Square Size: Capacity: 34-36mm Thickness: 5mm, Height: 3.5mm, Length: 153mm. Capacity: 38-42mm Thickness: 6mm, Height: 4mm, Length: 168mm. Color: Black Quantity: 1pc 34-36mm, 1pc 38-42mm, 2Pcs in total. Package Includes: 2 Pieces of Hook Wrenches : Please allow 1-3mm error due to manual measurement, pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item, pls understand, thank you