• For use on mm size drill
  
• Size : 3, 4, 5, 6, 8, 10mm

• This is adjustable "Depth stopper" for drill
• Size 46x31mm
• Weight 23gram
• Material plastic (for lightweight reason).

Drill Guide Set is an another handy setup, includes six precision-machined drill guide bushings and an acrylic base to hold the guides perpendicular to the work surface. It's great for a variety of common drilling needs, including knob and pull bores, doweling, specialized hardware mortises, and other situations accuracy is essential.
The base works on flat surfaces and also has V-groove in the bottom for perpendicular drilling in round cylindrical stock. Best of all, the entire kit will set you back less than twenty bucks and works with twist bits in sizes that you probably have on hand already.
The set includes: