16 mm Dowel-Hole Diameter
The 16 mm cutting diameter is paired with a 43 mm (1.693 in) cutting edge for blind-hole dowel drilling in supported woodworking materials.


Royce Ayr D105.160L is a 16 mm (0.630 in) left-hand industrial carbide-tipped dowel drill from the D105 family. Its verified 70 mm (2.756 in) overall length and brad-point dowel-drilling geometry support blind-hole boring in compatible woodworking production systems.
Left Hand-hand dowel drill with a 16 mm cutting diameter and 70 mm overall length in the Royce Ayr D105 family.
For compatible CNC drill banks, CNC boring systems, and portable woodworking machines configured for the appropriate D-series shank and left-hand rotation.
The Royce Ayr D105.160L is a left-hand industrial carbide-tipped metric dowel drill engineered for blind-hole drilling in particleboard, MDF, and solid wood. Its 16 mm (0.630 in) cutting diameter suits repeatable dowel-hole production on compatible CNC drill banks and portable woodworking machines.
Royce Ayr lists this D105 configuration with a 43 mm (1.693 in) cutting edge, 20 mm (0.787 in) b1 dimension, 10 mm (0.394 in) shank diameter, and 70 mm (2.756 in) overall length.
Royce Ayr specifies the D105 family with a larger carbide tip and improved geometry for longer life, carbide-tipped construction, a screw in the end for height adjustment, and a 10 mm shank with flat for set screws. Before production, confirm left-hand rotation, toolholder compatibility, insertion depth, runout, drilling depth, and machine parameters for the material being bored.
Technical Specifications
The 16 mm cutting diameter is paired with a 43 mm (1.693 in) cutting edge for blind-hole dowel drilling in supported woodworking materials.
The D105 family uses a 10 × 20 mm shank platform and 70 mm overall length for compatible CNC drill-bank and portable woodworking boring systems.
Carbide-Tipped / HW Tooling is paired with left-hand rotation and two cutting edges in the verified D105.160L configuration.
Verify that the boring head, spindle, chuck, or adapter accepts the required shank and is intended for left-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 D105.160L combines a 16 mm cutting diameter, 43 mm cutting edge, left-hand rotation, Z2 geometry, carbide-tipped / hw tooling, and the D105 10 × 20 mm shank / 70 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.