... Include impregnated, heavy-duty, surface-set casing shoes (the standard casing shoes and the rod shoes NW HW PW, and oversize China drilling Geological ... PDC)4.Drill tool: hoisting plug(standard and heavy duty), water swivel(compact plus and standard), overshot, outer tube & inner tube ... wrench, foot clamp etc. Casing Shoes Rode Shoe Bits surface set, natural diamond