Ideal Diamond Products Pvt. Ltd. Manufactures Tungsten-Carbide Casing Shoe Bit. Ideal Diamond Products Pvt. Ltd. Also manufactures a wide range of diamond core bits of wide encompassing range for deep hole operation, mineral exploration, coal exploration, site investigation and civil engineering works. Ungsten-Carbide Casing Shoe Bit uses seismic grade tungsten carbide as the cutting media. Tungsten-Carbide Casing Shoe Bit is a means of drilling through softer unconsolidated formations. Tungsten carbide does not possess the hardness of diamond and as such has a limited range of application as a drill tool cutting media.