... light) and hoisting plug, any size sub,any size tap for wireline drill. wrench with diamond China Drilling Geological Equipment ltd., is ... project ( wireline core drilling and double-tube core drilling)1.Drill rod:BQ NQ HQ PQ BT NT HT2.Core barrel: BQ ... , reaming shell & shoe bit (syn. and surface-set, PDC)4.Drill tool: hoisting plug, water swivel, overshot outer tube & inner tube ...