DescriptionAre you looking for a professional, yet affordable pull stud retention knob? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further! Our professional pull stud retention knob must meet your needs. It is one of the best choices for you.Features-Color: Black -Material: steel -Size: 5.50X2.20X2.20cm/2.16X0.86X0.86in - Taper: CAT 40 - A: 45 - D1 Knob: 0.589" - D2 Neck: 0.392" - D4 Pilot: 0.6360" - L: 2.250" - L1: 0.988" - L2 Shou to End: 1.264" - Compatible with HAAS V mill, like VF, mini mill, EC, ES, etc. - Made of steel with case hardened. - Can be used on non-coolant through CAT40 V mill. - Replace old or broken pull stud retention knob with a new one. - A great gift for your friend and family.