5/16 Inch Hollow Square Japanese Pattern Mortice Chisel & Bit Set Made By Nakahashi

Mortise size: 8 mm (A)

Chisel length: 98 mm (B)

Depth of cut: 54 mm (B1)

Chisel shank length: 40 mm (C)

Auger bit shank length: 153 mm (D)

Chisel shank diameter: 20.6 mm (E)

Auger bit shank diameter: 4.3 mm (F)

Material = Japanese Carbon Steel 

Finely ground Chisel is slightly tapered from the tip by 0.1mm to allow easy removal from the Mortice.

A deep waste slot prevents the waste material becoming jammed around the Auger.

The Auger bit has one spiral flute designed for rapid chip ejection up and out of the exit slot.

Image Is For Illustration purposes Only.