Dura Pro Sample Pack. The Dura-Pro Heavy Duty Flexi Stake was cleverly designed almost 25 years ago to return upright with minimal kinking. This was achieved by splitting the stake lengthwise to protect the heavier gauge sidewall from collapsing and distorting. All to prevent equipment and property damage. Made with pride in the USA! One 26″ Heavy Duty Flexi Stake and color brochure sent free of charge.