Heavy Duty Reaming Shells are intended for use primarily on wireline core barrel assemblies with drill hole sizes of up to 6 inches [152 mm] in diameter. Ideal Diamond Products Pvt. Ltd. Manufactures Heavy Duty Reaming Shells. 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. Heavy Duty Reaming Shells is manufactured with a full matrix body gauge ring that is cast onto the steel tool body for maximum bond strength and tool integrity. It is ideal for use in the most difficult applications where the formation conditions are highly unconsolidated and abrasive. Reaming shells are supplied with hard-metal strips on the exposed outside diameter of the steel tool body. These hard-metal strips are composed of micron sized tungsten-carbide particles that are suspended in a metal alloy and are used to armor coat the steel tool body in order to prevent premature wear.