Casing Shoes for sale Product Description Rod shoes and casing shoes are used to hold casing in bedrock or to ream down holes in boreholes. It helps hold the drill casing in the bedrock and provides a tight seal for the drilling fluid to return to the surface. It is also used to ream the casing down while advancing the casing string in an existing hole while the rod string is still in place. The basic structure of the rod shoes and casing shoes is a sintered powder metal crown fused to the steel tool body or shank. Powder metal crowns consist of two layers: a base layer that cuts the cover layer and a backing layer that connects the base layer to the steel tool body and supports the hard gauge diameter protective material. Casing Shoes Sizes ModelOutside Diameter of Casing ShoesInside Diameter of Casing Shoes InchesmmInchesmm AW2. 34559.561.948.26 BW2.96575.312.3760.2 NW3.61591.822.99276 HW4.625117.483.92599.7 HWT4.625117.483.92599.7 PW5.653143.584.855123.3 T2-562.205561.8547 T2-762.992762.63867 T2-863.385862.82371.7 T2-1013.9761013.03177 T6-1013.9761013.44587.5 T6-1315.1571314.646118 Rod Shoes Sizes ModelOutside Diameter of Rod ShoesInside Diameter of Rod Shoes InchesmmInchesmm BQ2. 34559.561.7845.21 NQ2.96575.312.3760.2 HQ3.61591.822.99276 PQ4.75120.663.985101.22Casing Shoes for sale website:http://www.chinazjtk.com/drill-bits-and-reaming-shells/casing-shoes/