... plug, any size sub,any size tap for wireline drill. wrench with diamond China Drilling Geological Equipment ... for the world engineering: geotechnical exploration, Mining exploration, Oil exploration and hydrapower station grouting project ( wireline core drilling and double-tube core drilling)1.Drill ... shoe bit (syn. and surface-set, PDC)4.Drill tool: hoisting plug, water swivel, overshot outer tube ...