Drill chuck wrench for electric drill clamping tool, Perfect to tighten and loosen a chuck. Allows for quick changing of your drill bit heads Made from solid metal and coated with durable plastic.Anti-rust, anti- design, reduce stress damage within a certain limit Suitable for use with all heavy-duty chucks. Compatible with a wide range of power tool Chuck Diameter: 20mm / 16mm / 13mm / 10mm / 6mm 0.6-6mm drill chuck key, the tip is inserted into the head with a diameter of about 5mm, and the outer diameter of the bevel gear is 15mm 1.5-10mm drill chuck key, the tip is inserted into the head diameter of about 6mm, the outer diameter of the bevel gear is 12.5mm 1.5-13mm drill chuck key, the tip is inserted into the head diameter of about 6mm, the outer diameter of the bevel gear is 17.5mm 3-16mm drill chuck key, the tip is inserted into the head diameter about 8mm, the outer diameter of the bevel gear is 21mm 5-20mm drill chuck key, the tip is inserted into the head diameter is about 9mm, the outer diameter of the bevel gear is 25mm Material:metal colour:Yellow+black Package Contents: 1 x 0.6-6mm Chuck Key (yellow) 1 x 1.5-10mm Chuck Key (yellow) 1 x 1.5-13mm Chuck Key (yellow) 1 x 3-16mm Chuck Key (yellow) 1 x 5-20mm Chuck Key (Black) Only the above package content, other products are not included. Note: Light 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.