I bought a Bosch GKF125CEK it has a 1/4" collet does anyone know what ER size that is? does anyone know if you can change it to a 3/8" or 1/2" collet?
Elaire makes precision collets and has those sizes for Bosch -- if that is the Bosch Colt. Elaire Corporation -Router Collets I own every Makita size and they are of high quality and I am very satisfied with them. The metric ones gave me access to many various types of endmills and to the 8mm which is the biggest I can get. With the Imperial the biggest I could get was 1/4".