• Rubber construction for durability
• Designed for use with Moen single-handle faucets
• Compatible with Moen brass cartridges
• Complete kit for an easier installation includes 4 o-rings
• (2) Size 11: 3/4? x 9/16? x 3/32? & (2) Size 12: 13/16? x 5/8? x 3/32?