This Trend Collet Extension (CE/1212) is designed for use in router tables where router cutter shank length is limited. It features a precision machined one-piece steel body. The extension has a 12mm shank and is fitted with a multi-slit spring steel collet and collet nut. It can be used at a maximum speed of 18000 RPM, increasing the cutter spindle length by 50mm. The maximum tool diameter it can accommodate is 50mm, with a maximum tool cut length of 30mm. It requires 19mm and 22mm A/F spanners. The package includes one collet extension body, one collet nut, and one 12mm collet.