Top Drill Dth Button Bits - Premium Heat-treated Design | Concave, Flat, Convex, And Dual Layer Face Options For Enhanced Drilling Performance

Top Drill DTH bits provide more cutting power and faster rates with heat treatment and tight controlled machining tolerances.

Bit face design
Concave face
Concave bits are suitable for straightest holes in soft to medium hard formations. These are most popular face designs.

Flat face
Flat face bits are designed to be suited for hard and abrasive formations.

Convex face
Convex bits are used in hard rock formations, where penetration rate is more important that the straightness of the hole.

Dual layer face
Dual layer bits are registered by Top Drill, the result of feedback from the field for extracting maximum performance. Maximum drilling effects have been gained by reducing unnecessary cutting. Dual layer bits are best suited for Tornado hammer.