Extension for taps, internal cooling, size 4-130mm FORTIS

Execution: made of steel, hardened, ground and burnished (corrosion protection).The front part is designed as a clamp handle.The clamping is done by tightening the knurled clamping nut.The rear part of the extension according to DIN, can be used in quick-change inserts and threading machines.
Application: For cutting deep internal threads.

Technical parameters:

• Size: 4
• For GB shank diameter: 6.0 mm
• For square shank: 4.9 mm
• Shank diameter: 7 mm
• Square: 5.5 mm
• L2: 60 mm
• Overall length L3: 130 mm
• HGNr .: W031