Pearl Ultra-Sound snare cables feature patented "Graduated Tension" cables for extended dynamic range from ultra-soft to ultra-hard. Ultra-thin and lightweight tips ensure fast response. These plates have three installation options: tunnels or holes to install them with a cord (included) and a strap socket. They are C-shaped phosphor bronze plates that offer lower tension in the center. Ideal for rock and metal drummers. It fits 13" drums and has 20 metal threads.