1.drilling hard material,such as stone,granite 2.very good performance. 3.speed very fast,with chip out when working

core kit model number  DBSET05

Comprising:

3-pc Core drill: Φ28X300mm, Φ52X150mm,  Φ117X150mm

4 Accessories: Hex adaptor 90mm,Center drill Φ8X200mm,SDS-Plus adaptor 1150mm,Drift key

Packing:With a plastic case

has many other size set

diamond core drill bit box