Fixed Arm Trough Foam Pad Right Masks U 20 PORTABLE ULTRASOUND * The Ships From:FL, USA U 20 PORTABLE ULTRASOUND * The U 20 Portable Ultrasound provides therapeutic ultrasound in an economical package * Soundhead Features and Options All Amrex ultrasound transducers are lightweight ergonomically designed and sealed for underwater therapy * Amrex offers two soundhead faceplate sizes: the standard 2 4 bands frequency shaping Right Arm Trough * Provides front of hand protection * Black molded heavy duty plastic with black foam padding or imitation lambskin padding * Pre installed Adjustable Height Channel Bracket is armpad height adjustable * Optional strap kit helps keep arm in trough (Item No