button bit is our one of main products , we have R25-38mm , R25-41mm ,R25-45mm etc , the button we can provide 6 buttons , 7 buttons , 8 buttons ,and 9 buttons , the body of the drill bit wo use the better material 45CrNiMoV ,and the vacuum heat treatment , make sure the hard of the body and improve the wear resistance , the tungsten carbide we use YK05 to ensure the quality of the drill bit , our button bit export to more than twenties , it is our target to provide the perfect procuts for our customers
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