That’s a Bosch GSB 19-2 Professional Hammer Drill
What it’s used for:
Heavy-duty drilling and hammer drilling. This one can do wood, metal, plastic, and also masonry like brick, block, and concrete with the hammer function.
Key details from your photo:
1. Brand: BOSCH Professional - blue color = pro line
2. Model: GSB 19-2
3. Type: Corded 2-speed hammer drill with D-handle
4. Features:
• 2 Gear speeds - low for torque, high for speed
• Hammer + Drill modes - switch for masonry vs wood/metal
• 13mm keyed chuck - the silver part at the front
• D-handle with aux handle - for better grip and control on big holes
• High power - this is one of Bosch's strongest corded drills, usually around 850W-1010W