Drill crowns being parts of industrial drilling machines, and parts and accessories of drill crowns, included in this class, namely, drilling heads and drill crown inserts in the nature of drill tips; accessories for road cutting machines, soil stabilizers, tree stump cutters for cutting tree stumps, trench cutting machines, shredding machines, recycling machines, mulching equipment, stone cutting machines and surface grinding machines, included in this class, namely, mechanical bit holder systems composed of mechanical bit holder devices in the nature of bit toolholders and parts of bit holder changing devices, namely, power operated chisels, chisel supports in the nature of chisel holders and welding supports in the nature of welded toolholders and bit tops in the nature of bit inserts included in this class; chisels for power-operated machines, namely, round shafted bits, flat teeth, welding teeth, mining bits; drill bits for power-operated road cutting or mining machines, namely, earth augers, drills for the mining industry, pilot drills; accessories for power-operated drills included in this class, namely, threaded sleeves in the nature of sleeves for bits; accessories for drilling equipment included in this class, namely, bit holder changing systems composed of bit holders in the nature of drill bit toolholders, power drill bits, supports for casing shoes, namely, casing shoe holders in the nature of casings for bores, flushing heads in the nature of flushing drill heads, pipes being parts of machines, and rod made of metal being parts of machines; carbide tipped tools for power-operated drilling equipment, namely, power operated chisels and power drill bits

Manually operated tools, namely, tools for assembling and dissembling bits from bit holders

Technical consultancy regarding the field of road cutting technology