USED: Adaptive Tricycle Wooden Foot Pedal Attachments w/ Straps. Straps hold feet with Velcro to the pedals. They tighten with bolts to stay on the pedals. Pair of attachments are included - 2 pieces. 9" long by 3.5" wide. The back bolts can be places in one of 2 different openings (see picture). Can fit on a pedal about 1" tall. Some marks on the attachments.