Made of high-quality metal materials, wear-resistant and long service life.Suitable for most electric drills and power tools.You can use it to tighten or loosen the chuck.Positive and negative ratchet combination wrench.Professional design, beautiful and generous, essential tools.Specification:Item type: drill chuck key wrench + four in one keyTwo-in-one key diameter:Small head: about 12.7 mm / 0.5 inchLarge head: about 17.5 mm/0.7 inchesFour-in-one key diameter: 13mm 14mm 16mm 17.3mmSize: 150 x 45mmWeight: about 150gColour:blackMaterial:MetalPackage Contents:1 * Drill Chuck Key Wrench1 * Four in one keyOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.