The Kupo Super Knuckle 3" Suction Cup is part of a modular system that uses a double-ended shell accepting two ball joints. The Kupo Super Knuckle 3" Suction Cup adheres to smooth, non-porous surfaces like glass or ceramic tile. Kupo Super Knuckle 3" Suction Cup has a ball that fits in one end of the shell, while the other end is free to accept optional adapters.
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.