Fixed Diameter Hole Opener is mainly used in onshore and offshore oilfield, it can enlarge the surface hole which drilled by drill bit, or connect to the above of drill bit, to complete with drilling and expanding operations. KayGot can provide three-cutters and four-cutters hole opener both specifications widely range from 12 1/4"  to 36".

 Cutters type: "SM": Soft to medium formation; "MH": Medium to hard formation; "XH": Hard formation.