1/2" Diameter X 1/4" Pilot Drill Hole Carbide Counterbore

WL Fuller Carbide Counterbore

Designed to cut clean holes in wood and plastic. Can also be used with stop collars. Counterbores for the flat under the heads of nails, spikes, and bolts. Allowing them to be sunk far enough beneath the surface to allow for a wood plug to be used to cover the head. Can be set at any point on a twist drill and held fast with two hex-socket set screws. Designed for clean cutting and hardened for long life.

• Not recommended to cut any type of metal or for use in hand held equipment. 
• Carbide Counterbores are highly recommended and are made exclusively to cut abrasive materials.
• Manufactured from Ferro-Tic ® machinable carbide and hardened for long wear in abrasive materials.

Made in USA