"DC Varibore Collets have the same accuracy specification as spring collets whilst maintaining a gripping range of +\/- 0.5mm. Supplied with either smooth or serrated gripping surface. Serrated collets are ideal for aggressive first operation grippin...
"These reduction bushes allow for the fitting of boring bars and drills with a tapered shaft. All sizes are manufactured in a range of capacities. The sleeves are hardened and ground for a good fit for both the holder and the shaft."