Black&Decker - KA400 1/4 Sheet Sander Description Black & Decker KA400 is a powerful sander with its 220 Watt motor, this yet remains lightweight sander.The KA400 is equipped with front and rear handles for maximum user comfort and control.It has a 1/4 inch sheet base that has an easy paper fitting system for quick and easy paper changes, and the machine sands flush to three sides, which is ideal for using on vertical surfaces such as doors and walls. Also the Black & Decker KA400 has the most up to date ergonomics.