->   The cutting ring of drill casings or coring barrels are fitted with weld-on blocks.
 ->    This cutting tooth is suitable for excavating clay, cobbles (diameter greater than 50 mm), sand, weathered rock and hard rock. This type bits are mounted at the outer edges of the cutting wheels to ensure the necessary over-cut. The tungsten carbide is hard and tough.  We can offer  BAUER CODE:-   WS20,WS39T,WS39 ,WS46 ,SH20,SH35