Drilling rod: made by CNC, and multi-heat treat, with premium alloy steel BQ,NQ, ... core or noncoring), casing shoes, reaming shells, overshot, hoisting plug, water swiel, wrench. These are all manufactured to the ... (syntheyic and surface-set, PDC) 4.Drill tool: hoisting plug, water swivel, overshot, outer tube & inner tube wrench, ... ,etc. BQ NQ HQ PHD HWT drill rod, multi-heat treat, 5ft and 10ft