M-101526-F3BK Sloan Flushmate complete pressure-assist flush system The M-101526-F3BK Flushmate System is a complete pressure-assist flush system. It is a replacement for 500, 501, 501-A and 501-B systems with a right hand or left hand flush handle. The American Standard Flushmate System includes: * Vessel-1.6 GPF * Lower Supply Nut * Tank Nut * Handle Replacement Kit * 2 in 1 Discharge Nut Wrench Flushmate vessels and components do not retrofit into gravity type toilets.Replaces, among others, M-101526-F and M-101526-FA