Replacement part for all Toilet Kart models. This black coated Clamp operates on the side of toilet bowl and on the "front" of toilet bowl (closest to water tank). There are three to a Toilet Kart. Sold in quantity: 1. Not sold with knob and all thread rod as seen in 2nd photo. Includes shipping if within 48 contiguous US states. Any questions, email us at sales@pipetytes.com.