Ridgid 26663 17 mm Micro Imager Camera Head and Cable for Seesnake is a great tool for professionals and amateurs alike. The 3-foot cable allows you to inspect hard to reach places pipesbehind a wallor even down a drain to find a lost ring. The small .7-inch (17 mm) diameter and tight turn radius camera head gets you through many toilet traps and 1-1/4" lines. The camera head is constructed out of durable aluminumand is waterproof in up to 10 feet of water. No more struggling with a mirror and flashlight. The camera head features a scratch-resistant sapphire lens and four adjustable LED Lights. The Ridgid 26663 17 mm replacement imager head for Seesnake is sold one item per package.