• 【7pcs Electric Drill Chuck Key】The package comes with 3/4in (20mm), 5/8in (16mm), 1/2in (13mm), 3/8in (10mm), 1/4in (6mm), 5/32in (4mm), and 4 in 1 drill chuck keys, which can meet the need of different kinds of hand drills, suitable for use with drills for quick change of drill bits.
• 【Sturdy and Durable】: Made from solid carbon steel for durability and hardness, coated with durable plastic for extra protection. The replacement drill chuck keys are tough enough for intended use, suitable for use with all heavy-duty chucks. Smoothly polishing surface treatment, anti-rust, non-slip, wear-resistant, and long service life.
• 【Easy to Use】Each drill chuck key is accurately sized for mounting and dismounting a variety of drills. The drill bit clamping key is comfortable to hold and provides enough leverage to rotate and tighten with ease. Each chuck press wrench has 11 or 12 teeth, so the drill press chuck is evenly stressed and won't slip or distort. It is convenient for you to replace the drill bit and helps to reduce stress damage within a certain limit.
• 【Convenient Storage 】 The thumb handle drill chuck keys are compact design, allowing for easy storage and use. The 4 in 1 drill chuck wrench is square hole design to make you easy to carry. Necessary clamping adjustment hardware tools set can be used with power drills flexible shaft grinders and morefor carpenter, craftsman, construction worker, mechanic, etc.
• 【Functional and Practical】Suitable for use with all heavy-duty chucks. Compatible with a wide range of power tool brands, such as electric motorcycle, electric hand drill, aircraft drill, pneumatic drill, bench drill and machine tools. Ideal gift for do-it-yourself projects, home improvement needs, large construction projects, or handymen who need to lock the drill bit safely into the drill. Warm Note: DO NOT hit the chuck key handle with a hammer or other impact tools