Durable rubber construction: made from high-quality rubber with strong wear resistance so belts hold their shape and resist stretching or deformation during regular use. Full assortment, ready to use: each pack contains 100 flat belts in a range of fold lengths from 40–135 mm, covering common loop sizes so you can find the right length for most repair needs. Correct size for cassette drives: 4 mm wide flat belt profile is compatible with most cassette tape drives and tape mechanisms that use flat rubber drive belts. Simple replacement and reliable performance: designed as a direct replacement for broken or worn drive belts; installs quickly to restore tape transport, reduce slippage, and improve playback stability. Why you need this kit Saves time and money by keeping a wide selection of replacement belts on hand for repairs and maintenance. Prevents common tape-drive problems such as slow playback, uneven speed, or non-spinning capstans caused by stretched or broken belts. Durable material reduces the frequency of repeat repairs. Practical applications Repairing home cassette decks and hi-fi tape machines to restore proper play and record functions. Restoring portable players and Walkman-style units where the original belts have hardened or snapped. DIY electronics refurbishing and vintage audio projects where multiple belt lengths are needed to match different pulley sizes. What to expect in the pack 100 flat rubber belts, assorted fold lengths between 40 mm and 135 mm. 4 mm belt width suitable for most cassette tape drive pulleys. Ready-to-install replacements for worn or broken original belts. Notes on use Confirm the required fold length and 4 mm belt width for your specific player before installation. Install carefully to avoid twisting the belt; proper seating on pulleys ensures reliable operation.