For the extension of all cylinder boring bits or all tools with of shank 8, 10, 12, 13 mm

of the shank 10 mm, or 13 x 30 mm. With four attachment screws for fixing. Solid quality. The shank of 13 mm has three clamping surfaces

Perfect for drilling deep holes, also for turnery. Only limited suitable for drilling end grain (especially hard wood) because there is considerable strain on the drill chuck

1639

Profi

Extension

Art.- No. I
[mm] O-
[mm] S
[mm] OAL
[mm] Effective L.
[mm] 1639.011 8 16 10 80 50 1639.003 8 16 10 125 100 1639.004 8 16 10 250 220 1639.010 10 16 10 80 50 1639.001 10 16 10 125 100 1639.002 10 16 10 250 220 1639.009 10 22 13 400 360 1639.007 12 22 13 400 360 1639.005 13 22 13 125 100 1639.006 13 22 13 250 220 1639.008 13 22 13 400 360