This 10" Housing .125 O-ring kit is designed specifically for Merillat Racing 10" housings. Each kit includes 70" of .125" O-ring material, providing enough to install the O-ring in the faceplate twice. Approximately 34" is required for a single installation, giving you extra material for a future replacement or second install. KIT INCLUDES: 70" of .125" O-ring material Enough for two complete faceplate installations