Attention! This is a Proxxon compatible accessory, not a Proxxon branded product. For height setting, PD 250/E needs optional quick-change toolpost 24026. PD 400 is already equipped with quick-change.

Relativity® hardened steel clamp holder with clamp plate and 3 x M5 clamp screws. Unlike most holders offered elsewhere, our Relativity® clamp holder is relieved to accept all of our 12.7mm HSS M1 & M2 parting blades in widths 1.0mm 1.6mm 2.0mm 2.4mm. The relief ensures proper vertical attitude of the blades, giving clearance on both sides of the cut. With its horizontal bedding V-groove, the holder allows extension of the blade, without affecting the set centre height. 

Choose from our compatible range of 8 Relativity® blades, sold separately:
HSS M1 blades have a chip-breaker radius on the top, with tiny flats on each edge. They all share 12.7mm height, but each width seats differently in the bedding V-groove, so for quicker work keep one holder for each blade width:
1.0mm x 90mm
1.6mm x 115mm
2.0mm x 115mm
2.4mm x 115mm

HSS M2 blades have a chip-breaker radius on the top, sharp along the edges. They all share 12.7mm height, but but each width seats differently in the bedding V-groove, so for quicker work keep one holder for each blade width:
1.0mm x 88mm
1.6mm x 115mm
2.0mm x 115mm
2.4mm x 115mm

Grade_____ C Cr Mo W V % by weight
M1______ 0.80 4 8 1.5 1.0
M2______ 0.95 4 5 6.0 2.0

BLADE SHOWN IN IMAGE IS AN EXAMPLE OF 8 AVAILABLE - NOT INCLUDED IN PURCHASE OF HOLDER