• Drive belt fits cassette tape deck in Fisher Price 3818 tape recorder
• use to repair units sold by Hasbro, Playskool, and Sesame Street
• 11" circumference square cross section thickness similar to dime coin
• This has similar specifications to "TOT-63" sold by others for $more$
• old belts typically have stretched 3-10% longer than new belts
• check circumference to make sure you order the proper size
• new belts should be 3-7% less than a wire around the belt path