Superior Electric S3-TH1A 5/16 Inch T-Handle Chuck Key Fits J3516A, Bosch & Makita Drill Chucks
This T-Handle Chuck Key has a pilot shank of 5/16" (5.9mm). It is small and light weight, pilot shank of 15/64" (5.9mm) is suitable for many brands of electric drill chucks. This is a high quality and cost effective product that will be just perfect for you. Chuck Keys Fits 5/8" Chuck.