1932 - Bosch produced the first electric rotary hammer. Subsequent introductions included the lightest 2 Kg. rotary hammer in the world (1981) and SDS-Max®; bit holding system (1990) for quick, easy hammer bit changes. Bosch 11255VSR 1" SDS Plus Bulldog Rotary Hammer Regular price: $239.00 Our price: Bosch 11247 1-9/16" Spline Combination Rotary Hammer Drill Regular price: $399.00 Our price: Bosch 11318EVS Rotary Hammer SDS-MAX® Bosch 11241EVS 1-9/16" Hammer Drill SDS-MAX® Combination Regular price: $519.99 Our price: Bosch11304K Brute Demolition Hammer Kit With Hauler & Bits Free Shipping