Drill chuck wrench, 6 sizes, for pillar drill chucks, tightening wrench for electric drills, diameter: 4 mm, 6 mm, 10 mm, 13 mm, 16 mm, 20 mm

【Sufficient Quantity】- The package contains 6 chuck keys, easy to replace daily and sufficient to meet your various needs. 【6 Different Sizes】- The sizes are 3/4" (20 mm), 5/8" (16 mm), 1/2" (13 mm), 3/8" (10 mm), 1/4" (6 mm), and 5/32" (4 mm), suitable for different types of hand drills. 【High-Quality Material】- The drill chuck key is made of solid high-carbon/chromium vanadium steel and coated with durable plastic. Its surface is smooth and polished. It is rustproof, non-slip, wear-resistant, and offers a long service life. 【Easy to Use】- The drill bit wrench is comfortable to hold, and the chuck can be tightened and loosened. It is convenient to change the drill bit and helps reduce stress damage within certain limits. 【Wide Application】- The drill chuck key is suitable for most electric drill chucks and heavy-duty chucks; the replacement drill key is compatible with most brands of power tools to meet your needs for replacing lost or damaged chuck keys.