Straight Grinder GGS 8 SH, The most powerful model from Bosch with quick-locking nut, Powerful 1200 watt motor for high material removal rate, With SDS quick-locking nut for rapid disc changes without tools, Restart protection prevents automatic start-up after a power outage, Hex key WAF 6 (spare part number 1 907 950 007), Clamping flange, diameter 65