GREAT

[ Oil field equipment, namely, drilling rig mechanization machines and devices; Drilling rigs, floating or non-floating; Oil field equipment, namely, drilling rig mechanical handling machines and devices; Drilling machines; Drills for the mining industry; Boring machines; Disintegrators for chemical processing; ] Bits for mining machines; [ Oil-well pumping machines; ] Drill bits for rock drilling; Polycrystalline diamond compact (PDC) drill bits for drilling machines; Core drilling bits; Centering drilling bits being parts of machines