The Bosch GBH 2-28 F Professional rotary hammer drill is the most innovative in its class. It features a powerful 880 watt motor and 3.2 joules of impact energy for fast work rates. It is versatile and suitable for large diameters up to 68 mm. It includes KickBack Control for user protection and active vibration damping for comfortable use.

Brand Name	Bosch
Manufacturer Model No	BOSGBH228F2P
Rated power input	880 W
Max. impact energy	3.2 J
Impact rate at rated speed	0 – 4,000 bpm
Rated speed	0 – 900 rpm
Weight	3.1 kg
Length	402 mm
Height	216 mm
Bit holder	SDS-plus
Drilling dia. in concrete with hammer drill bits	4 – 28 mm
Opt. app. range in concrete with hammer drill bits	8 – 16 mm
Drilling diameter in concrete with core cutters	68 mm
Max. drilling dia. in masonry with core cutters	68 mm
Max. drilling diameter in steel	13 mm
Max. drilling diameter in wood	30 mm
Sound pressure level	90 dB(A)
Sound power level	101 dB(A)
Uncertainty K	3 dB

Bosch GSB 21-2RE Hammer Drill for professional users with high power and lifetime. Equipped with a robust metal chuck for secure bit holding during intensive drilling applications. Features a high-performance motor, metal gear housing, and anti-rotation clutch for safety.

Brand Name	Bosch
Material	Metal
Type	Hammer Drill
Rated Power Input	1100w
No-Load Speed	0 - 900 / 3.000rpm
Power Output	630w
Rated Speed	0 - 580 / 1.900rpm
Torque (soft screwdriving applications)	40 / 14,5Nm
Rated torque	9,6 / 3,2Nm
Drill spindle connecting thread	1/2" - 20UNF
Chuck capacity	1,5 - 13mm
Impact rate at no-load speed	0 - 15.300 / 51.000 bpm
Max. torque	40/ 14,5Nm
Drilling dia. in Concrete	22 / 13mm
Drilling dia. in Wood	40 / 25mm
Drilling dia. in Steel	16 / 8mm
Drilling dia. in Masonry	24 / 16mm