High refill port and refill adjuster ensure, efficient, consistent, performance Fit the following models: K-3466, K-3467, K-3386, K-3524, K-3492, K-3607, K-3393 Fluidmaster Ballcock. High refill port and refill adjuster ensure, efficient, consistent, performance Comes either with riser (FLU747K) or by itself (FLU747) f