BrassCraft SF0326 Dual Thread Faucet Aerator with 15/16-Inch 27 Male and 55/64-Inch 27 Female Thread - 1.5 GPM Designed to connect to most bathroom and kitchen faucets with inside (female) or outside (male) threads Laminar spray for crystal clear water flow Chrome plated no-lead brass for a durable high quality appearance Max Flow Rate: 1.5 GPM (5.7 LPM) Low Flow Slotless Style California state legislation limits product use to Kitchen faucet installations only