20Pcs Drill Chuck Key Wrench and Brass Chuck Collet Set Contains Electric Drill Clamping Tool, 1/32" to 1/8" Keyless Chuck Nuts and 4 in 1 Steel Drills Chuck Key for Rotary Tools
10 Sizes Brass Chuck: Made of high-quality fine copper with great surface treatment for wear resistance and durability. One-piece construction design and built-in spring of the 3-jaw chuck provides durability and stability, ensuring strong holding power, changing the clamping capacity of your electric grinders than plastic models. The non-slip textured surface of the collet increases friction, holding tiny drill bits more securely at high speeds, and easily replace damaged rotating tool accessories.
7mm Collet Nut & All-Metal Nuts: These nuts are wear-resistant, more durable, and safer than plastic alternatives. Accepts accessory rotary bits with 1/32-inch(0.8mm) to 1/8-inch(3.2mm) shanks. Easily lock and release drill bits to quickly convert without changing collets, which also give you the freedom to drill with one hand, which is great for working in tight spaces.
Premium Drill Chuck Key Wrench: The universal drill chuck key tools are made of solid carbon steel and chrome vanadium steel with black coating, which strong enough to withstand greater resistance and stronger force. Each chuck press wrench has 11 or 12 teeth, so the drill press chuck is evenly stressed and won't slip or distort. Designed with long handle to provide you with good leverage to easily tighten or loosen the chuck for quick bit changes. Perfect replacement for lost or damaged chuck keys.
Highly Compatible: Compatible with Dremel rotary tools: 200, 285, 300, 3000, 395, 398, 400, 4000, 4200, 4250, 4300, 8000, 8100, 8200, 8220, 8260. Compatible with Dremel cordless and corded rotary tools (including drills, sanding drums, buffing wheels and other lightweight attachments). Perfect for light-duty accessories including electric motorcycle, electric hand drill, aircraft drill, pneumatic drill, sanding drums, polishing wheels, bench drill and bristle brushes and cut-off wheels.