The heavy duty quad canes are made out of aluminum and have either a large or small base and an offset handle. They have a lightweight design and low center of gravity, which combine for greater stability and balance. The canes are 7/8″ in diameter. The small base canes can adjust from 26.75" to 35.75" and their larger counterpart can adjust from 30.5″ to 39.5″ in height. The tip size for these canes is 50015. They have a weight capacity of 500 lbs.