1-1/8" X 1/2" Pilots for Counterbore - High Performance & Durable Cutting Tool | Drill America Reamers Enhanced Rigidity: Durable cast aluminum

Enhanced Rigidity: Durable cast aluminum motor mount increases rigidity

Drill America Solid Carbide Burs come in many shapes and sizes

No center punching needed

The flat sides of all Half Files are double cut

1-1/8" X 1/2" Pilots for Counterbore - High Performance & Durable Cutting Tool | Drill America Reamers Enhanced Rigidity: Durable cast aluminumCounterboring is the enlargement of a portion of a hole that has previously been formed. If the counterbored portion is shallow (1 8" or less), the operations is usually known as spot facing; for example, a flat seat for a bolt head or nut. If, on the other hand, the hole is enlarged to a considerable depth, it is designated as counterboring. These counterbores are made of two piece construction, having an integral shank and counterbore cutter, and a