Collet Extensions ER - Set of 2

A router collet extension is perfect to use when an increased height of router bits is needed on router tables, routing jigs or router bases. These extensions give 50mm of additional height and allows you to easily change router bits above your router table. Simply insert the extension into your router, then insert the router bit into the ER engineering collet and secure it by tightening the collet nut using the supplied spanners.

The 1/4" extension is supplied with a standard 1/4" multi slit ER16 engineering collet and the 1/2" extension is supplied with standard 1/4" & 1/2" multi slit ER20 engineering collets. These collets fully grip around the router bit shank for safer routing with less vibration. The collets are made from heat treated precision ground spring steel which gives a runout accuracy of less than 0.01mm. The 1/4" collets have been specifically designed to grip over a 1mm range from 6.5mm down to 5.5mm meaning both 1/4" imperial and 6mm metric shank router bits can be used in the extension. The 1/2" collet has been designed in the same way to grip over a range from 13mm down to 12mm meaning both 1/2" imperial and 12mm metric shank router bits can be used. The extension body has been precision machined from a single piece of high-quality steel which has been computer balanced to minimize vibrations to ensure the extension and therefore router bit will run perfectly true.

The precision machined bodies alongside the ER16 & ER20 collets are the ideal combination to give extra height to your router bits while maintaining complete accuracy. The set comprises of two extensions, one with a 1/4" shank and one with a 1/2" shank, both have an overall length of 90mm. ©