ITEM NAME:Heavy Duty Adjustable Mountain Bike Bicycle Cycle Prop Side Rear Kick Stand BX.1 x Big Foot Kick Stand. Easily install on the chain stay. Fit for Circular & Square tube. Material: aluminium alloy, rubber foot (prevent to slip). Adjustable Length:Approx.34.5-40cm/13.6-15.7". Stable stand and durable in use.