[WEAR RESISTANT MATERIAL]: MADE OF HIGH CARBON STEEL WITH HEAT TREATED FOR LONG SERVICE LIFE, POSSESS HIGH STRENGTH TREATED [FIRM WELDING]: WELDING TECHNOLOGY ENSURES A FIRM WELD, SMOOTH INNER AND OUTER WELDING PORTS [NO DROP]: ROUND ALLOY BLADES PREVENT DROP, EACH BLADE SHARES WORKLOAD EFFICIENTLY [WIDE USES]: CONNECT ELECTRIC HAMMERS AND IMPACT DRILLING EQUIPMENT, CONVERT WATER DRILL HOLE OPENERS [FOR WALL]: REMOVAL OF CONCRETE, CEMENT, STONE WALL, PRACTICAL AND USEFUL
eBay