The crown include flat face and "v" ring design, the impregnated casing shoes bits are good for sand, boulders, gravel and clay. The Surface-set casing shoes cut through boulders easily, and also are suitable for different overburden formations.

Casing shoe bits: AW, BW, NW, HW, PW SW,

Rod casing shoe:  BWL NWL HWL PWL 

Also sinocoredrill can provide :

1.  AW rod, BW rod and casing

2. Diamond core bits for exploration mining and dam drilling grouting; 

3. Diamond reaming shells for exploration mining and dam drilling grouting; 

4. Casing shoes bits; (AW, BW, NW, HW, PW)