P/N 308035440 Type : 03.8000-035.440 CAT40-BTH 50 Collet Chuck Holder. Powered by SixBit's eCommerce Solution. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Metalworking Supplies\End Mills\Finishing End Mills". The seller is "fwoods1951" and is located in this country: US. This item can be shipped worldwide.