• Essential for precision drilling jobs; pays for itself by preventing errors and material waste
• Stops can be set at any point on drill bit flute or shaft; quick & easy adjustment
• Gives exact drilling results; prevents under- and over-drilling
• Work with any twist-type bit for wood, metal, concrete or masonry; power drills, drill presses
• Hardened steel collars with hex set-screws; includes hex key for tightening and loosening collars

Set of 7 collars for the most commonly-used bit sizes: 1/8", 3/16", 7/32", 1/4", 5/16", 3/8" & 1/2". One-year warranty and Jack's Tool Shed worry-free Satisfaction Guarantee.