Quotes (0) All Categories > Oil & Gas / Mining > Roof Bits > Roof Bit > Advanced Search Advanced Search in Roof Bit Unit of Measure Imperial Metric Both dimensional specification Width (w) (in) No Preference 1 1 1/2 1 1/32 1 3/8 1 7/8 1.010/1.030 1.015/1.030 1.020/1.030 1.042/1.062 1.045/1.059 1.380 / 1.400 1.500 / 1.525 Hole (h) (in) No Preference 0.400 0.425 0.440/0.460 0.445/0.455 0.445/0.460 0.450 0.470/0.480 0.475 0.480/0.490 0.495/0.505 0.495/0.510 0.500 0.505/0.515 0.510/0.520 0.520 0.550 0.600 0.650 0.692 / 0.708 0.700 0.725 0.745 / 0.775 0.750 Thickness (t) (in) No Preference 0.175 / 0.185 0.175/0.185 0.179 / 0.185 0.183/0.188 0.190 / 0.200 0.190/0.200 0.205 / 0.215 0.245 / 0.255 0.245/0.255 0.308/0.318 Clear Cancel Advanced Search