For use in router tables where there is a limited router cutters shank length available. |Precision machined one-piece steel body. |With a 1/2 inch shank, fitted with a multi-slit spring steel collet and collet nut. |Use at maximum speed 18000 RPM. |Increase cutter spindle length by 50mm. |Maximum tool diameter 50mm. |Maximum tool cut length 30mm. |Requires 19mm & 22mm A/F spanners.|Accessory collet and nut sets available for other shank diameters.