1/2 in Verified Diameter
The verified 1/2 in cutting diameter is paired with a 30 mm cutting edge for repeatable blind-hole dowel drilling.


Royce Ayr D100.127R is a 1/2 in right-hand carbide-tipped brad-point dowel drill from the D100 family. Its 30 mm cutting edge, 10 × 20 mm shank platform and 57 mm overall length support precision blind-hole boring in compatible woodworking production systems.
Right Hand-hand brad-point dowel drill with a 1/2 in cutting diameter, 30 mm cutting edge and 57 mm overall length in the Royce Ayr D100 family.
For CNC drill banks and compatible portable woodworking machines configured for a 10 mm shank, the D100 shank platform and right-hand rotation.
The Royce Ayr D100.127R is a right-hand industrial carbide-tipped brad-point dowel drill engineered for blind-hole drilling in particleboard, MDF, and solid wood. Its 1/2 in cutting diameter supports repeatable dowel-hole production on compatible CNC drill banks and portable woodworking machines.
Royce Ayr lists this D100 configuration with a 30 mm cutting edge, 20 mm b1 dimension, 10 mm shank diameter, Z2 / two cutting edges, and 57 mm overall length. The 10 × 20 mm platform provides the verified insertion geometry for this series.
Industrial carbide-tipped construction and improved dowel-drill geometry are intended for long service life in production boring. Before production, confirm right-hand rotation, toolholder compatibility, insertion depth, runout, drilling depth, workpiece support, and machine parameters for the material being bored.
Technical Specifications
The verified 1/2 in cutting diameter is paired with a 30 mm cutting edge for repeatable blind-hole dowel drilling.
The D100 family uses a 10 × 20 mm shank platform and 57 mm overall length for compatible production boring systems.
Carbide-tipped / HW construction is paired with Z2 geometry and right-hand rotation in the verified D100.127R configuration.
Verify that the boring head, spindle, chuck, or adapter accepts the required 10 mm shank and is intended for right-hand tooling. Confirm clean toolholding, minimal runout, correct insertion and height adjustment, appropriate drilling depth, secure workpiece support, and suitable spindle/feed parameters before production.
Royce Ayr D100.127R combines a 1/2 in cutting diameter, 30 mm cutting edge, right-hand rotation, Z2 geometry, carbide-tipped / HW construction, and the D100 10 × 20 mm shank / 57 mm overall-length platform.
It is intended for blind-hole drilling in particleboard, MDF, and solid wood on compatible CNC drill banks, CNC boring equipment, and portable woodworking machines.