Check the listing for details. 20 pcs CAT40 45° 0.594" Degree Pull Stud Retention Knob FITS HAAS CAT CNC Silver. Condition: New. Listed at 37.99 USD. WE Are USA Seller, Ship From USA 20 pcs CAT40 45 Degree Pull Stud Retention Knob For HAAS CAT CNC Silver/Black color Condition:100% Brand New & High Quality Size: As Picture Fitment: Fits on any HAAS V mill, like VF, mini mill, EC, ES, etc. Specification: Material: 40CR 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" Feature: Strength comes from steel itself, and flexibility is from case hardened Can be used on both spindle coolant through and non-coolant through HAAS CAT40 V millnon-coolant through HAAS CAT40 V mill Pass hardness and anti crack test Black / Silver oxide . Improves durability. Extends part life. Reduces distortion from heat treat Professional heat treated Bad nor non heat treat will shorten and weaken the life and strength of pull stud Package Include:20 x CAT 40 Pull Stud