- Ryobi Angle Grinder model G-2300A. Works with a power of 2000 watts and a disc diameter of 230 mm, voltage 220-240 volts, 9 inches - Skil grinder 2000 watts and disc diameter of 230 mm, voltage 220-240 volts, 9 inches - Makita Angle Grinder model 9556HP. Power 840 watts and rotation speed 11,000 rpm, voltage 220-240 volts, disc size 100 mm - SPIRE grinding and cutting grinder with a power of 800 watts, disc size (115 mm) 4.5 inches, rotation speed 11000 rpm