Tungsten carbide insert: used for mining and oil-field rock bits. cater to your requiements the shapes & size what your Tungsten carbide inserts : different types availablewe can make Q type,Z type,X type,B type,S type,P type,and the size & shape can meet what your need.C/O available, used in all machinesBrazed tips as per GB/trade standards; Grade ABCDE ShapeA1A2A3A4B1B2B3C1C2C3C4D1D2E1E2E3E4E5 ...