4 Way Chuck Key For Drill Chucks Master Tool Pro Grade Beefy Build Heavy Duty Heat Treated Steel With Black Oxide Finish Center Square Design Locks And Unlocks Popular Drill Chucks Keeps Bits In Place
✔️ Heat-treated alloy steel, black oxide finish; opens 86+ chucks
The professional grade 4-way chuck key is designed to secure drill bits on drill presses. Built from heat-treated alloy steel with a black oxide finish for wear resistance, it works with many chucks, including Jacobs branded chucks. Model ST-12 Master Chuck I, the original master chuck key, opens heavy-duty chucks from 3/8-Inch to 3/4-Inch. The squared center of the key also enables acetylene tank operation.
✅ Compatible with many chucks, including Jacobs branded drill chucks.
✅ Made from heat-treated alloy steel with black oxide finish for wear resistance.
✅ Includes 4 pilot hole sizes: 3/8" with 12 teeth; 1/4" with 10 teeth; 5/16" with 11 teeth; 1/4" with 11 teeth.
✅ Center square feature enables acetylene tank operation.
💡 What is a master chuck key used for in drill press setups? This is a handy tool for securing and releasing chucks during bit changes. - securely tighten and loosen chucks to hold drill bits in place - support quick, accurate bit changes on drill presses - works with chuck sizes from 3/8-Inch to 3/4-Inch