Csyibeielec Countersink Drill Bit Set - 4-Piece M2 HSS Tapered Pilot Bits with Depth Stop Collar, 82 Degree Counterbores, 1/4-inch Hex Shank

Overview

The Csyibeielec Countersink Drill Bit Set is a compact, versatile kit designed to deliver clean countersinks and precise counterbores across a range of materials. Built around durable M2 high-speed steel and a thoughtful depth-control system, this set aims to help you achieve crisp edges and consistent results without guesswork.

What’s in the set

• 4 premium M2 HSS tapered pilot countersink drill bits in sizes: 3/16 x 1/2 inch, 11/64 x 1/2 inch, 9/64 x 3/8 inch, and 5/32 x 3/8 inch

Premium features

• Aluminum alloy depth stop collar for adjustable depth control
• HSS M2 bearing stopper anti-scratch for smooth operation
• 82 degree counterbores aligned with standard imperial screws
• 1/4-inch hex shank for broad drill compatibility

Performance and control

Durability comes from M2 HSS material, while the helical flute design promotes fast, clean cuts. The Bits create tidy countersink and counterbore holes with minimal wander, making them suitable for precise edge finishing on a variety of projects.

Depth control and repeatability

Depth settings are independently adjustable for drilling and countersinking. Use the hex screws to lock your chosen depth and the aluminum alloy stop collar to prevent over-penetration. This setup supports different materials and project needs, fostering consistency across tasks.

Materials and applications

These bits perform well on natural wood, engineered wood, MDF, particle board, plywood, aluminum, and other non-ferrous metals. They’re a thoughtful choice for woodworking, renovation, cabinet making, and DIY projects where neat edges matter.

Tips for best results

• Operate at a slower speed, around 200 RPM, for the cleanest edges and longer bit life.
• Follow the depth-stop guidance to achieve repeatable countersink depths.

Note: Some listings may reference a 5-piece configuration; the features above describe a 4-piece set. Please check the packaging to confirm exact contents for your order.