Feature(may vary by option.)

●Extends any Forstner shank drill by an additional 5-3/8 in. Helps you drill flat bottom holes with standard Forstner drills or start deep hole turning projects like larger vases or containers;
●The inner diameter of the collet is 10.5mm. This tolerance is very tight and designed to accommodate Forstner drill bits with shank sizes of 10mm, 9.5mm or slightly smaller;
●Carbon steel construction, precision ground and polished to ensure strength and longevity
●Two set screws and Allen key included. To secure the shaft, tighten these screws with the Allen key.
●Triangular Shank Diameter:9.5mm/0.37" Total Length:170mm/6.71" Extender Length:137mm/

[170 mm long for 9.5 mm and 10 mm shaft]

[254mm Lang für 9 | 5mm Schaft]

Description

Special feature:
1) The Forstner drill bit extension gives you an extra reach of 137mm to drill deeper into your projects.
2) The inner diameter of the collet is 10.5mm and is designed to accommodate Forstner drill bits with shank sizes of 10mm, 9.5mm or slightly smaller.

Specification:
Material: carbon steel.
Triangular shank diameter:9.5mm;
Extension length: 137 mm.
Total length: 170 mm.

Package:
1 x Forstner bit extension.
1 x hex key