Heavy-Duty, Parallel BarsParallel bars are mounted to a 1 1 2" thick hardwood plywood base with ultra durable UV coated satin finish Safety tread at both ends of the platform Middle upright with through pin lock for extra support Extra wide 48" width for bariatric patients Width adjustable 1 1 2" one piece, stainless steel handrails Easy height adjustment with spring loaded plungers and numbered height strip Heavy duty, square telescoping steel uprights Second height knob