Check the listing for details. SFX 10Pcs CAT40 Pull Stud Retention Knob Coolant Thru for HAAS Mill CAT40 Holder. Color: Silver, Condition: New. Listed at 69.00 USD. Company AdvantagesTen-year pull stud/retention knob manufacturer with a market share of 3,000,000400,000 pieces in stock, complete models and specificationsAutomated mass production for fast deliveryHigh-quality steel guarantees strength and working lifeStrict inspection, elegant appearance, reliable packagingIn stock with fast deliveryProduct FeaturesEach pull stud is tested thoroughly which ensures its qualityMade from fine alloy steel 20CrMnTi with treatment to HRC53-57Hard outside and soft inside, with higher wear resistance and better toughnessHigh quality black oxide ensures long pull stud life and a non-rusting surfacePrecision turning on all critical surfaceLarge selection for specific machine models, custom design acceptedPacking Details：10pcs BT-CAT40-45°U/T Pull Stud (Coolant Thru) + Free ShippingNote: Carton box and plastic box packaging are shipped randomly, please order remarks for special requirements SFX is dedicated to the R＆D of CNC tool holder pull studs, nuts, pull stud and nut wrench/spanner, tool holder locking device etc. The pull studs that we supply are BT series, CAT series, MAZAK series with complete specifications.Any questions, please contact us, thanks!!!