Head Diameter: 108-305mm(4.25″-12″)

Shank Length: 280-331mm(11″-13″)

Available with or without liner tube for your selection.

The QL series drill bit is mainly used in geological exploration, coal mine, water conservancy and hydropower, highway, railway, bridge and construction, etc.

Head Diameter: 90-305mm(3.54″-12″)

Shank Length: 225-329mm(8.86″-12.95″)

The Mission series drill bit is mainly used in geological exploration, coal mine, water conservancy and hydropower, highway, railway, bridge and construction, etc.

Head Diameter: 108-800mm(4.25″-19.69″)

Shank Length: 260-480mm(10.24″-18.5″)

The SD series drill bit is mainly used in geological exploration, coal mine, water conservancy and hydropower, highway, railway, bridge and construction, etc.