Adjustable Ballcock ADJUSTABLE BALLCOCK W/BRASS SHANK SAME AS FLU400A W/BRASS SHANK Fluid master Adjustable Ballcock. Anti-Siphon Includes brass shank 9 - 14 Adjustable height Refills quickly and quietly Can be used on 1 or 2 piece toilets Universal replacement for most ballcocks Adjustable Ballcock. ADJUSTABLE BALLCOC