These high qulity quick change collet sets using for German CNC machines. They are the best sets we have carried and can be used in production shops for precision work. FEATURES:
A. Switch out end mills the easy way-just attach the quick-change collet chuck to your mill and slip your end mill into appropriate collet.
B. Spring collets are hardened and ground for maximun holding power and ultra precision.
8 pcs. sets includes a collet chuck, 1/4", 5/16", 3/8",1/2", 5/8", 3/4" and 1" collets, spanner wrench and moulded plastic case.
Draw bar: 7/16"-20NF.