76mm T38 Drilling Retract Thread Button Bit

76mm T38 Drilling Retract Thread Button Bit :   Product Name: button bitDescription:For different rock hardness coal mining button bitButton bit Made with high quality of best quality alloy steel bar and tungsten carbide, through heat treatment like Atlas.Material:Alloy steel bar and tungsten carbide bitMOQ:No MOQ required for testing and trial orderBody TypeNormal type and retract typeThread typeR22,R25,R28,R32,R38,T38,T45,T51,ST58,ST68,Diameter32mm-152mmButton bit shapeSpherical and BallisticFace shapeFlat shape and Drop-center shape  The information you may like to know before order: 1. Methods of Payment:   T/T (Telegraphic Transfer) or Western Union 2. Handling time for an order   Based on order quantity, normally it takes 10-30 days for production.   Only 2 or 3 days if we have stock on your request size. 3. Shipping way   Sample order: we suggest Courier express like DHL/TNT/ or by air   Bulk order: we suggest by air or by sea. 4. Quality Control   We have our own experienced QC.   There will be strict inspection and testing for every order before shipping out. 5. After Services:   1. Our sales team will response for your question within 24 hours (Holidays Excluded)   2. Technical Support will be available in any time   3. Free replacement will provide once the failure confirmed caused by our product quality   /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1