2.8×8 adjustable counter sunk bit

Product Description

Adjustable countersink drill bits upgrade your workshop from fixed-purpose tools to a versatile, depth-adjustable cutting system. This 2.8×8 bit solves inconsistent screw seating, tool swapping, and material tear-out. It is reliable, precise, and built to last.

Core Specifications

The 2.8mm pilot diameter with 8mm countersink capacity covers 80% of standard screw sizes for furniture, cabinetry, and construction. A depth-stop collar slides along the shank and locks with a set screw, allowing ±0.1mm precision. Every screw head sits flush or slightly below the surface for a professional finish.

2.8×8 adjustable counter sunk bit

Cutting Geometry and Materials

High-speed steel construction ensures durability and heat resistance. Precision-ground 90° cutting edges match flat-head and oval-head screws. Multi-flute chip-breaker design evacuates debris efficiently, preventing clogging and reducing heat. Integrated pilot drill eliminates separate pilot hole operations.

Usability and Compatibility

The 1/4-inch hex shank fits all standard drill chucks, cordless drills, drill presses, and impact drivers. Laser-etched depth markings allow repeatable settings across multiple workpieces. A hex key secures the depth setting against vibration.

Durability and Quality

QA testing includes hardness, concentricity, and thermal cycling tests. HSS construction resists wear through hundreds of holes in wood, MDF, plywood, plastic, and non-ferrous metals. TiN or black oxide coating reduces friction and extends tool life. Cutting edges can be resharpened with a diamond file.

2.8×8 adjustable counter sunk bit

Applications

Suitable for woodworkers, cabinet makers, electricians, metalworkers, DIY enthusiasts, and contractors. One tool replaces multiple fixed-size countersinks, saving storage space and reducing tool changes. Order today and deploy immediately with zero configuration.

139- 288 cabinet pull handle  available in Mombasa, Kwale, Kilifi, Lamu, Mandera, Marsabit, Isiolo, Meru, Embu, Kitui, Machakos, Makueni, Nyandarua,

Nyeri, Kirinyaga, Murang’a, Kiambu, Turkana, Samburu, Trans Nzoia, Uasin, Gishu, Elgeyo Marakwet, Nandi, Baringo,

Laikipia, Nakuru, Narok, Kajiado, Kericho, Bomet, Kakamega, Vihiga, Bungoma, Busia, Siaya, Kisumu, Homa Bay, Migori, Kisii, Nyamira, Nairobi.

In Nairobi you can find them at: Westlands, Dagoretti,  Lang’ata, Starehe, Kamukunji, Embakasi, and Kasarani, Kibera, Mathare,

Eastleigh, Karen, Lavington, Westlands, Parklands, Runda, South C, South, Ngong Road

In Mombasa you can find us at : Nyali, Mwembe Tayari, Majengo, Likoni ,Bamburi, Miritini