The UJK extension is supplied with a collet suitable for 1/2" shank cutters with collets available for 8mm, 1/4"(6.35mm) and 1/8"(3.2mm) shank sizes. A much improved grip all round the cutter shank is provided giving safer routing with less vibration, and the collet nut incorporates an ejection ring to release the shank for easy cutter changes.
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