Summary: hl=en start=15 tbnid=J4aa8rEFa5hk6M tbnh=96 tbnw=120 prev= images 3Fq 3Dbelt 2Bhung 26ndsp 3D20 26svnum 3D10 26hl 3Den 26lr 3D 26sa 3DN Picture of a conveyor belt being used as a tread mill The contra bands are a self supporting system that moves
Image Dimensions: 400 x 400
Image originally found here.