Genuine Dirt Devil 3720310001 Belt (2pk) Dirt Devil 3720310001 Package of (2) Dirt Devil 3720310001 or Style 4/5 belts. This belt fits all Dirt Devil Featherlite uprights that use paper bags, Swivel Glide uprights that use paper bags, and all Dirt Devil Vision uprights. I t is recommended that you change this belt every 3 to 6 months to ensure optimum preformance . Fits these and similar models: M085300, M085335, M085355, M085360, M085400, M085405, M085410, M085430, M085435, M085440, M085440CA, M085460, M085470, M085475, M085480, M085500, M085500-1, M085500A, M085500B, M085500HD, M085520, M085525, M085530, M085530B, M085530CA, M085540, M085540CA, M085545, M085550, M085550-1, M085550B, M085560, M105315, M5200, M5231, M5235, MDU5220, MDU5320, MDU5420, MRY5000, MRY5200