DTH BIT Match to 3" DTH hammer with the similar quality level to Atlas and Sanvik. Factory price and Carbide material. BETOPPER DTH ... etc.In 3" series, parameter about different request, pls refer to below chart: COP34,HD35,IR3.5Bit Dia.NO.AirGaugeFrontWeight(mm ... .5Any enquiry or problems, pls feel free to contact with us! DTH Bit(Cop32,Br3,XL3) similar to Atlas copco with factory prices