Add rear grip to your Waveblaster or any other ski with these rear sponsons. Incredible cornering while maintaining stability. Machined from 6061-T6 billet aluminum plate and includes all 316 stainless steel hardware. Finally a set of “blade-style” sponsons available now, order your set today. Comes with the set of sponsons and hardware. Specifically designed for the Waveblaster and utilizes the existing 2 holes in the rear for easy installation. Alternatively, you can remove the 2 dowel pins and spacer plate and mid-mount these sponsons wherever you want on whatever ski you want! A must have watercraft performance part from JCRACING!