... low pressure hammers CIR65a, CIR90, CIR110, CIR150,CIR170etc,DTH drill bits:60mm-254mm bits with flat face, concave design fit for the atlas ... , U94, U95, U118 And coal bolting bit and coal bolting rod.6. All kinds of casing bits for shield machine and construction tools ... , 25mm,30mm,33mm,38mm,etc.8. Blast furnace tap hole drill tools.(Rod, Cross type bits, button bits and X type bits etc) Drill bits