SDS-Max Shaft Hammer Drill 3/4" Chuck and Adapter (.75) of an inch

Drill chuck is specifically engineered for Heavy-Duty use 

One piece construction with 70,000 psi welds 

• Jaws are special heat treated and precision fitted to withstand excessive torque! High quality, heavy duty design
• Internal bearings to give highly reliable and durable performance
• Each chuck 100% inspected for performance and precision
• Fully hardened working components provide exceptionally high accuracy 
• Now you can use a wide variety of drill bits in your SDS Max Hammer Drill
• Sent USPS Priority mail