bosch gkf 600 router collets and bits

[gedereco]

This is the best I could find, collet sleeves, there's a 3.2 to 6.35mm one that should do your job

http://www.trend-uk.com/en/UK/trend/...=collet+sleeve

I've just orderered one. I'll give it a go. Just waiting to get my computer back from repair shop and ill try them out. Thanks for link.