Drill bit stop collars are used to prevent over/under drilling for consistent hole depths when drilling repeatedly. The Drill Bit Stop Collars in this seven-piece set feature two design types. The five larger sizes are a split-ring design, and the two smaller ones are a set screw design. The split-ring design will positively lock anywhere along the bit diameter and will not move after tightening. This set will work on both twist and brad-point drill bits, includes a hex key and the following sizes: 1/8″, 3/16″, 1/4″, 5/16″, 3/8″, 7/16″ and 1/2″.

Features:

• Used to prevent over/under drilling for consistent hole depths when drilling repeatedly
• Works with both twist and brad-point drill bits
• Split-ring design positively locks anywhere along the bit

What’s Included:

• (1) 1/8″ drill bit stop collar with set screw
• (1) 3/16″ drill bit stop collar with set screw
• (1) 1/4″ drill bit stop collar with split ring
• (1) 5/16″ drill bit stop collar with split ring
• (1) 3/8″ drill bit stop collar with split ring
• (1) 7/16″ drill bit stop collar with split ring
• (1) 1/2″ drill bit stop collar with split ring
• (1) Hex key