CMT XTREME Brad-Point Dowel Drill 10mm x 35mm Cutting Length x 70mm OAL, 10x30mm Shank, LH


XTREME Z2 · V2
Brad-Point Dowel Drill
CMT 311.100.42 is the exact 10 mm left-hand variant in the 311.41/42 XTREME long-life dowel-drill family. It combines a 35 mm cutting length,70 mm overall length,10 × 30 mm parallel shank with driving flat,two cutting edges,two curved negative spurs,two spiral flutes,and an extra-fine micrograin carbide cutting section for blind-hole drilling in solid wood,wood composites,laminates,and plastics.
Main Product Description
CMT 311.100.42 is the exact left-hand 10 mm item in the official 311.41/42 long-life dowel-drill family. The verified variation row specifies a 10 mm diameter,35 mm cutting length,70 mm overall length,10 × 30 mm shank,and LH rotation.
The XTREME design uses a premium extra-fine micrograin carbide cutting and spiral section with a centre point,two cutting edges,two spiral flutes,and two curved negative spurs. The geometry is intended to support accurate blind-hole entry,clean rim formation,chip evacuation,long cutting life,and repeated resharpening.
A parallel shank with driving flat and axial-adjustment screw supports installation in compatible boring-machine chucks and adaptors. CMT identifies the family for solid wood,wood derivatives,particleboard,laminates,MDF,and plastic materials,including use on high-speed boring machines,point-to-point equipment,and CNC routers.

Best Fit Applications
Product Highlights
Exact 10 mm LH Variant
Item Code 311.100.42 combines a 10 mm diameter,35 mm cutting length,70 mm overall length,10 × 30 mm shank,and verified left-hand rotation.
XTREME Z2 · V2 Geometry
Two cutting edges,two spiral flutes,two curved negative spurs,and a centre point support clean blind-hole drilling and controlled chip evacuation.
Long-Life Carbide Construction
The extra-fine micrograin carbide cutting section supports extended service life,high-speed machine use,accurate centring,and repeated resharpening.
Compatibility & Installation Notes
Confirm exact Item Code 311.100.42,left-hand machine rotation,a compatible 10 × 30 mm boring-bit interface,full driving-flat engagement,and correct axial adjustment before use. Verify chuck or adaptor condition,tool projection,spindle clearance,workholding,and the applicable machine and tool speed limits. STIC screw 990.003.00 is the listed screw reference;990.088.00 is the optional retaining screw for compatible Weeke machines. Do not substitute the right-hand 311.100.41 variant.
Accurate Blind-Hole Drilling in a Verified 10 mm LH Format
CMT 311.100.42 combines a 10 mm diameter,35 mm cutting length,70 mm overall length,10 × 30 mm shank,left-hand rotation,Z2 cutting edges,V2 spurs,and two spiral flutes.
An extra-fine micrograin carbide cutting section,centre point,P.T.F.E. coating,driving flat,and axial-adjustment system complete the verified XTREME Series 311 configuration.