Makita 9741 Wheel Sander - 7.8 Amp, 3500 RPM, 4 3/4in. x 4in. Wheel Size Powerful 7.8 AMP motor delivers 3,500 RPM for fast and efficient paint and rust removal; brings out wood grain Innovative design for sanding flush to wall with nose and side of sander Adjustable front roller for uniform pressure to workpiece.Wheel Size (width x diameter) : 4-3/4 inches x 4 inches Well balanced with a low center of gravity for easy operation Electric brake for fast stopping of the wheel 2 ea. Hex Wrench (783204-6) Nylon Brush Wheel (794379-6) 9032 9403 9924DB 9404 9920 9903 9031 Unique design allows smooth and even surface removal Adjustable front roller for uniform pressure to workpiece Well balanced with a low center of gravity for easy operation Electric brake for fast stopping of the wheel