Dirt Devil Hand Vacuum Belt - Royal - 501/503, 2 Pack - Style #1 Power Nozzle The environmentally friendly formula is

The environmentally friendly formula is vacuum cleaner safe and not harmful to damp carpet

The support installs in place of the original during filter service

verify that both the input and output connections match your hose

or let the roll wobble and bind

Dirt Devil Hand Vacuum Belt - Royal - 501/503, 2 Pack - Style #1 Power Nozzle The environmentally friendly formula isThis 2 pack of replacement Style 1 flat belts fits the Dirt Devil Royal 501 and 503 hand vacuums. The flat belt links the motor to the brush roll so the brush spins and agitates dirt out of the surface. Belts stretch, glaze, and snap with use, and a worn or broken belt is the most common reason the brush roll stops turning and pickup falls off. A fresh belt restores full brush roll speed and returns the hand vacuum to strong, even cleaning. Fits: Dirt