Forearm Platform and Mounting bracket. Features Constructed of lightweight aluminum. Height and depth adjustable. Handgrips extend forward or back, supinate, pronate and are angle adjustable. Individually adjustable. Contoured armrest with a flexible edge. Velcro straps to prevent arms from slipping. Choice of mounting positions inside or outside of the handlebar for lateral adjustment. Spacers are included for additional later range. Accessories' for the Wenzelite Glider Walker 10219FRD-1, 10219FBL-1, 10221FRD-1, 10221FBL-1, 10222FRD-1 SpecificationsArmrest Length Small = 5 , Large = 8 Height from handlebar to armrest Small = 3.5 4.5 , Large = 5 7.5 WarrantyLimited Lifetime Warranty. 1 Each / Each