Bullet Teeth/Round Shank Cutter Bits Our products are equal to Betek's products, such as B47K22H, B47K19H, B43H, BFZ80, BFZ70, BFZ96, BFZ65, BFZ25R, BHR73, BHR133, BHR142, etc. And also can produce according to your samples and drawings. They are used in building foundations, bridge and road constructions, trenching works,etc.