Among the 4-inch angle grinders available in the current market, the Bosch GWS 6-100 - 670W Professional Angle Grinder - Small is unique. It is one of the best angle grinders available in the 670W segment. This portable grinder can work on a number of surfaces and even has armoured coils that ensure that the motor is protected from dust. The grinder has a flat gearhead that can be rotated 90º for working in tight spaces. The Bosch GWS 6 has a spindle lock for discharging the disc with ease. The grinder tool also has an easily adjustable anti-rotation protection guard. This particular angle grinder ships with accessories like auxiliary handle, back flange, locking nut and a two-hole spanner.