Description of AccusizeTools Collet Bridgeport Wrench 0223 0954 - Essential Tool for Bridgeport Machines
10pcs. Set includes the following collet sizes: 3/32", 1/8", 3/16", 7/32", 1/4", 5/16", 11/32", 3/8", 7/16" and 1/2". Wide holding range requires fewer collets and changes. For machining tools such as end mills, drill bits, reamers, etc. Unique self-releasing system eliminates sticking. Accuracy to 0.0004". Run-out Tolerance: 0.0004". The thread for an R-8 drawbar is 7/16(.4375) x 20 tpi. The actual runout is 0.00031".