JT0; Drill Chuck not Included. Spring loaded 3/4" travel fits any drill, mill, lathe or jig borer.; Reduces small drill breakage. 1/2" diameter hardened and precision Ground Straight Shank x 0JT.Suitable for drills (.008-5/32"). Drill Chuck not Included Grasp free turning ring and feed drill.; JT0. Suitable for drills (.008-5/32").
Very good product. The runout was below the maximum they stated, even when fully retracted. I have bought this HHIP and another that is commonly sold at Revain and it has been much better. I bought a small HHIP cartridge and installed it with no problems and no additional TIR. I've run it up to 4000rpm and it runs as smooth as it gets. If you need delicate drill chucks, this is for you.