Pilot Hole Bits

Varel's pilot hole bits have been designed for the most demanding raise bore pilot holes and blind bore pilot holes. All pilot hole bits incorporate a premium sealed bearing system with pressure compensator for added durability.

Pilot hole bits feature:

• Advanced metallurgy with silver plated frictional elements to reduce heat generation and provide resistance to galling under high loads
• O-ring seals made from a proprietary HSN elastomer for long seal life
• Blunt, dome-shaped inserts that provide a durable cutting structure for maximum crushing and chipping action and minimal wear
• Conical and/or chisel-shaped inserts for increased penetration rates in softer formations
• Extra hardmetal and carbide inserts in shirttail surface provide superior seal protection