5 mm Verified Diameter
The verified 5 mm diameter is paired with a 43 mm cutting edge for repeatable blind-hole dowel drilling.


Royce Ayr D105.050L is a 5 mm left-hand carbide-tipped brad-point dowel drill from the D105 family. Its 43 mm cutting edge, 10 × 20 mm shank platform and 70 mm overall length are published Royce specifications.
Left Hand-hand industrial drilling configuration with a verified 5 mm diameter and 70 mm overall length.
For compatible CNC drill banks, CNC boring systems, and woodworking drilling equipment configured for left-hand tooling and the required machine interface.
The Royce Ayr D105.050L is a left-hand industrial woodworking drilling tool engineered for accurate production boring. Its verified 5 mm diameter and 70 mm overall length are retained directly from published or exact catalog data.
Royce Ayr lists this D105 configuration with a 43 mm cutting edge, 20 mm b1 dimension, 10 mm shank diameter, Z2 / two cutting edges, and 70 mm overall length.
Before production, confirm left-hand rotation, toolholder compatibility, insertion depth, runout, drilling depth, secure workpiece support, and suitable spindle/feed parameters for the material being machined.
Technical Specifications
The verified 5 mm diameter is paired with a 43 mm cutting edge for repeatable blind-hole dowel drilling.
The SKU-specific overall length and geometry are retained without importing unsupported dimensions from adjacent Royce drill families.
D105.050L 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 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 D105.050L combines a 5 mm cutting diameter, 43 mm cutting edge, left-hand rotation, Z2 geometry, carbide-tipped / HW construction, and the D105 10 × 20 mm shank / 70 mm overall-length platform.
It is intended for accurate industrial woodworking drilling on compatible CNC drill banks, boring equipment, and production systems.