General description This set includes 8 different depth stop rings (3, 4, 5, 6, 8, 10, 12, 16 mm) designed for various drilling applications. It also comes with a hex wrench for easy adjustments. Technical specifications Material: High-quality carbon steel for the stop rings and stainless steel for the center pin. Sizes: 8 different depth stops (3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 16 mm). Usage Ideal for repeated drilling operations with twist drills, wood drills, and angle drills. Can be used for drilling into wood or walls. Helps to fix the limit drilling depth on the drill bit, ensuring precise control over the depth of the hole being drilled. Compatible with standard and curved head drill bits. Other information Durable and long-lasting, wear-resistant, and corrosion-resistant, making it a reliable tool for woodworking and crafts. The fixed screw collar is designed to prevent damage to the drill bit.