5/32 in Verified Diameter
The verified 5/32 in diameter is paired with a 27 mm cutting edge for repeatable thru-hole drilling.


Royce Ayr D145.040L is a 5/32 in left-hand carbide-tipped V-point thru-hole drill. Its verified 57 mm overall length supports clean exit-hole drilling through laminates, particleboard, MDF, and solid wood on compatible woodworking production systems.
Left Hand-hand carbide-tipped drilling tool with a verified 5/32 in diameter and 57 mm overall length in the Royce Ayr D145 family.
For compatible CNC drill banks, CNC boring systems, and woodworking drilling equipment configured for the required D145 shank platform and left-hand rotation.
The Royce Ayr D145.040L is a left-hand carbide-tipped V-point thru-hole drill engineered for production woodworking boring. Its verified 5/32 in cutting diameter and 57 mm overall length support accurate machining in compatible CNC and portable boring systems.
Verified Royce data lists this D145 configuration with a 27 mm cutting edge, 20 mm b1 dimension, 10 mm shank diameter and 57 mm overall length. No flute-count value is added because the archived D145 table used for this batch does not publish Z.
Carbide-tipped / HW construction supports long service life in production drilling. Before production, confirm left-hand rotation, toolholder compatibility, insertion depth, runout, drilling depth, secure workpiece support, and suitable spindle/feed parameters.
Technical Specifications
The verified 5/32 in diameter is paired with a 27 mm cutting edge for repeatable thru-hole drilling.
The SKU-specific overall length and family geometry are retained without importing unsupported dimensions from adjacent Royce drill sizes.
D145.040L is configured for left-hand boring positions and should be installed only in the corresponding machine station or spindle direction.
Verify that the boring head, spindle, chuck, or adapter accepts the required family shank and is intended for left-hand tooling. Confirm clean toolholding, minimal runout, correct insertion, appropriate drilling depth, secure workpiece support, and suitable spindle/feed parameters before production.
Royce Ayr D145.040L combines a 5/32 in cutting diameter, 27 mm cutting edge, left-hand rotation, carbide-tipped / HW construction, and the D145 10 × 20 mm shank / 57 mm overall-length platform.
It is intended for accurate industrial woodworking drilling on compatible CNC drill banks, boring equipment, and production systems.