Features 1. Equipped with a positive and negative ratchet switch, allowing forward and reverse rotation for quick and easy loosening and tightening of the drill chuck, providing simple and convenient operation. 2. Constructed from high-quality steel, offering excellent wear resistance and long service life. 3. Dual-size design for enhanced versatility. Small head diameter: 12.7mm, large head diameter: 17.5mm. 4. Non-slip handle provides a comfortable and secure grip. 5. Designed for tightening or loosening the chuck. Compatible with most electric drills and power tools. The ratchet mechanism enhances efficiency when changing drill bits. Specification Material: 45# steel + rubber Color: Black Weight: approximately 104g Diameter of both ends: small head: 12.7mm, large head: 17.5mm Ratchet function: Forward and reverse switch Length: Total length: 150mm Package List 1 x 2-in-1 Drill Chuck Ratchet Wrench