Single- Handle Lavatory Faucet WasherlessEZ FLO Bathroom Prestige Collection 4 in. Centerset 1 Handle Washerless Bathroom Faucet. This is a Single Handle Lavatory Faucet that is washerless with a stainless steel ball control. It has a loop handle for style and copper tube waterways with a 1 2" connection. This is an EZ Flo product that is Low Lead Certified and meets the NSF Standards and US Certified by IAPMO Eastman. Features: Washerless, stainless steel ball control Loop handle Copper