2.5 mm Solid Carbide
The catalog directly verifies the 2.5 mm diameter, 22 mm cutting edge and 55 mm overall length for D167.025L.


Royce Ayr D167.025L is a 2.5 mm left-hand solid-carbide center drill for the D270 / D275 adapter system, with 22 mm cutting edge and 55 mm overall length.
Left Hand-hand solid-carbide center drill with a verified 2.5 mm diameter and 55 mm overall length.
The D167 core geometry is used with D270 and D275 drill adapters in compatible drilling and boring systems.
The Royce Ayr D167.025L is a left-hand solid-carbide center drill engineered for accurate industrial woodworking drilling.
Royce publishes D167.025L at 2.5 mm diameter, 22 mm cutting edge and 55 mm overall length. The D167 center-drill family is intended for use with D270 and D275 series adapters.
Solid-carbide construction provides a wear-resistant cutting platform for compatible wood products and hard plastics. Confirm adapter selection, handedness, seating, runout, drilling depth, feed rate and spindle speed before production.
Technical Specifications
The catalog directly verifies the 2.5 mm diameter, 22 mm cutting edge and 55 mm overall length for D167.025L.
The D167 family is designed for use with the corresponding Royce Ayr D270 and D275 adapter/bushing systems.
D167.025L is configured for left-hand drilling positions and should be installed only in the corresponding machine station or spindle direction.
Confirm the exact SKU, rotation, drill-bank or adapter interface, toolholding condition, insertion depth, runout, drilling depth, workpiece support, and machine parameters before production. Verify that the selected D270 or D275 adapter matches the drill diameter and machine station.
Royce Ayr D167.025L combines a verified 2.5 mm diameter, 22 mm cutting edge, left-hand rotation and 55 mm overall length in the D167 center-drill platform.
Use only with the correct D270 or D275 adapter and compatible drilling system.