Features Durable Chrome Vanadium Steel Construction: Crafted from high-quality chrome vanadium steel, this converter ensures exceptional hardness and wear resistance for long-lasting performance Adjustable Tightening Mechanism: Fine rolling teeth allow for easy adjustment of the tightness, providing a secure fit for various applications and enhancing convenience during use Enhanced Stability for Precision Drilling: The fine grinding center drill serves as the drilling shaft, delivering improved stability for accurate and efficient drilling tasks Versatile Compatibility Range: Designed for impact drills and electric drills with an applicable range of 1.5 to 1m, this chuck converter accommodates a wide variety of tools Effortless Installation Process: Featuring both square and round shank adapters, installation is quick and straightforward, making it easy to switch between different tools and tasks Features: 1、[EXCELLENT MATERIAL] Made of chrome vanadium steel material, with high hardn, wear resistance and strong force. 2、[WRENCH ADJUSTMENT] With fine rolling teeth, the tightn can be adjusted by rotating the drill chuck wrench. 3、[GOOD STABILITY] The fine grinding center drill is used as the drilling shaft to make the drill body more stable. 4、[APPLICABLE RANGE] The applicable range of the impact drill chuck is 1.5？1m, which has strong practicability. 5、[EASY TO INSTALL] With square and round shank adapter rod, often installed on impact drills and electric drills. Specification: Item Type: Drill Chuck Product Material: Chrome Vanadium Steel Applicable Range: Approx. 1.5-1m / 0.06-0.51in Installation Aperture: 1/2-20UNF (Thread) Style: Wrench Type Package List: 1 x Drill Chuck 1 x Wrench Package List 1 x Drill Chuck 1 x Wrench