The products are made of high-quality stainless steel, so they are very durable and absolutely weatherproof. It will not rust and has a strong spring that can be held safely and permanentlyReliable protection: Once mounted on the downpipe, the marten repellent belt protects against climbing up martens, cats and raccoons.Easy to install: the individual belt links together to the corresponding object size is very easy. Then simply attach to the downpipe or tree using the supplied spring.Durable:Made of high-quality stainless steel. Non-rust and strong spring for long strong grip on downpipe.Reliable as a defense against climbing down pipes, trees and gutters through martens, raccoons and cats whilst still being discreet.MaterialStainless steel wireLong Spike Quantity15/10cmLong Spike Quantity8Middle Spike Length10/7cmShort Spike Length9/5cmSpike Length8mmSpring Diameter1.7mmWeight140gInstallation note: It is important for installation that the longer wire pins point downwards and are inclined. The shorter wire pins go horizontally, upwards.Please install above head height, especially to protect children playing.