Rotary Hammer

• It's a hammer that spins. It is not a hammer drill, which is a drill that vibrates. Distinction: full ramming motion vs vibration.
• Menards hammer drill -[1]]
• Menards rotary hammer - [2]. 6.5 ft lb of impact. HF 3.7 ft lb [3]

Bits

• SDS vs SDS Max - 10 vs 18 mm shank [4]
• SDS type - [5]