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Seven metal split-ring collars and an Allen wrench

Big Horn

Big Horn 19123 Split Ring Stop Collar Set 7-piece pneumatic accessory

SKU CH-K9Y8-PCTAM

Seven-piece split-ring collar set controls drill depth on bits from 1/8 to 1/2 inch and includes an Allen wrench

  • Product typeDrill Accessories
  • Accurate depth control with split-ring grip on full bit diameter
  • Seven collars cover common bit sizes from 1/8 to 1/2 inch
  • Secure hold without screw contact protects bit shafts
  • Allen wrench included for quick collar adjustments
  • New 7-piece set ready for immediate workshop use

Drill depth control set

The Big Horn 19123 provides seven split-ring stop collars that clamp around the full circumference of a drill bit so the set screw never contacts the shaft. They let woodworkers, metalworkers and DIY users set repeatable hole depths without marking the bit or risking surface damage. The collars cover bits from 1/8-Inch through 1/2-Inch and an Allen wrench is included for quick adjustment.

Check bit shank compatibility

Verify that each bit you plan to use has a smooth, round shank matching one of the listed diameters; tapered, hex or reduced-shank bits will not seat correctly in the split-ring design. Ensure your drill chuck can accommodate the collar thickness once installed so the bit still reaches the workpiece. No power-tool interface or chuck standard is specified beyond the bit sizes shown.

Low thermal and noise impact

The collars are passive metal rings that add negligible mass and generate no heat, vibration or audible noise during drilling. They draw zero electrical power and do not affect the thermal behaviour of the drill motor or battery. Normal use simply requires tightening the supplied Allen wrench to lock the collar at the desired depth.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 84% of the 5,493 comparable items (median $27.99).

Specifications

Product
Product typeDrill Accessories

Questions about this item

What collars and tools come in the 19123 set and do I need to buy anything else?

The 19123 set includes seven split-ring stop collars sized for 1/8-Inch, 3/16-Inch, 1/4-Inch, 5/16-Inch, 3/8-Inch, 7/16-Inch, and 1/2-Inch bits plus an allen wrench; nothing else is required.

Which collar from the 19123 set should I pick for a 3/8-Inch drill bit?

Use the collar marked 3/8-Inch — it is one of the seven sizes supplied in the 19123 set.

How does the split-ring design of the 19123 collars affect drilling depth control?

Each collar grips the full diameter of the bit without the screw touching the shaft, so the stop stays exactly where you set it for repeatable hole depth.

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