1.Hole size:105-138mm 2.Reliability quality 3.Simple structure and easy operation 4.Long service life

Usage:

Drill holes from 105mm to 152mm.

Matched products:

76mm drill rods with API 2 3/8"REG BOX

  bits with COP44.DHD340A,Mission40,QL40,SD4,XL4 shanks

Application fields:

all kinds of fields, such as mining, quarry, tunnel, bridge, construction and etc., but extremely exellent to use with casing tubes during casing drilling.

Features: 1.high impact power with low frequency

                   2.non-return flushing

                   3.Reliable performance