R & R M2 clips won’t weigh your kite line down like other heavier clips which may result in your kite line bowing or falling into the water. The M2 release adjustment is quite precise, consistent and provides a smooth reliable release of your kite fishing ring. Best when used with R & R’s 9 mm highly polished, rounded Stainless Steel Rings. Made in the USA. Patent Pending. Durable, impact-resistant composite materials Corrosion proof and perfectly reliable Smooth release, each and every time Easily adjustable to specific tensions