There are many of different taper in drill bit ,the most common is 11 degree 12 degree 7 degree and 6 degree , the number of the button we usually are 6 button 7 button and 8button ,the material of the button bit we have 42CrMo , 35CrMoV ,45CrNiMoV etc ,and the tungsten carbide we have conical button ,spherical button ,hemispherical button ,parabolic button etc,we can acording to requiment of the customer to produce it and we will help our clients with saving the costs and provide the most suitable products for our customers
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