Best Adjustable Diameter Counterbore

Trend Snappy 6.35mm x 12.7mm TCT Counterbore - to recess screws for plugging

12/7mm diameter TCT counterbore to drill precision recess to hide screws below the surface when used with matching plug cutter. Ideal for screws up to 12 gauge Imperial sizes..
Used in conjunction with the Trend Snappy SNAP/PC/127T or SNAP/PC/12 Plug Cutters, fixings can be hidden with an almost invisible plug for a high quality, professional finish..
6.35mm diameter drill allows for clearance for thicker screw shanks and to ensure accurate, consistent alignment..
Drill depth can be altered to suit material thickness and is easily replaceable if it becomes damaged..
TCT cutting faces can be resharpened ensuring a long lifespan and assured performance in all timbers and abrasive timber based materials including ply, MDF and chipboard..

High speed steel, high quality and durable..
It includes 7 sizes in one counterbore set(M3, M4, M5, M6, M8, M10, M12)..
An essential hardware tool for industrial..
The counterbore set works great in counter bored hole..
Apply to cast iron, steel, copper, aluminum, conventional hardness of stainless steel and die steel, etc..

High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.
Available in 1-3/4-inches overall length.

[SIZE] - M8x1.25mm thread size, 0.39" (10mm) long, 0.39" 10mm outer diameter ,OD tolerance: +0.02"/0"..
[MATERIAL] - Made of brass, rust resistance, good thermal conductivity and heat resistance, can ensure long time using..
[FEATURE] - Can be installed by ultrasonic or heat into thread tapered hole, or in during injection..
[ADVANTAGE] - No need to counterbore or countersink the boss hole since the insert has guide pilot..
[APPLICATION] - Widely used on injection for fastening..

VERSATILITY: Bosch hex shank countersink bits feature adjustable depths and provide precise, clean pilot holes in wood, plastic and composite materials.
3 in 1: Drill, Countersink and Counterbore in one step.
UNIVERSAL FIT: The Bosch SP515 countersink set fits all Bosch and competitive brands drill/drivers.
USE WITH: For use with Allen wrench (included in set).
the hex shanks fit 3/8 in. and 1/2 in. corded and cordless drills.
ACCESSORIES: Replaceable bits offered (sold separately).

High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.
Round shanks allow use with a wide variety of toolholding systems.
Counterboring is the enlargement of a portion of a hole that has previously been formed.
The counterbor is a two-piece construction, having an integral shank and counterbore-cutter, and a pilot that is interchangeable, which provides flexibility in the use of the tool.

High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.
Round shanks allow use with a wide variety of toolholding systems.
Counterboring is the enlargement of a portion of a hole that has previously been formed.
The counterbor is a two-piece construction, having an integral shank and counterbore-cutter, and a pilot that is interchangeable, which provides flexibility in the use of the tool.

Material: Made of hardened ball bearing steel (#9027) with precision ground cutting edges..
Tapered Reamer Diameter:1/8"-1/2"(3-13mm).
T-Handle Grip: Provides greater leverage and easier reaming. Provides leverage for easier operation and rotation,saving effort. Removable handle for compact storage..
Perfect tool kit for every DIY users to enlarge holes in wood. Suitable for reaming taper holes on wooden boards,chamfering,deburring,easy to screw counterbore..
Precision machined cutting edges smooth metal surfaces with little effort. Useful tool for removing burrs from steel, brass, aluminum, plastic, wood and wallboard..