Model 5725 EnviroGard™ bubbler head is designed with a cover that automatically releases with water pressure to expose the bubbler nozzle. Combining the constructed lead-free heavy-duty forged brass with a high polished stainless steel cover, this bubbler is sure to last. Unit comes further equipped with basin shank that allows for retrofitting on many fountains. Protective covering and angled drinking stream discourages direct mouth contact, making the drinking facilities much more sanitary. .5 gpm flow control ensures water stays flowing at a steady rate. Dimensions: Basin shank is 3/8, and 1-5/16 in length. Connection is 1/4 IPS inlet. Haws Co. manufactures drinking fountains, electric water coolers and electric drinking fountains to be lead-free by all known definitions including ANSI/NSF Standard 61, Section 9, California Proposition 65, and the Federal Safe Drinking Water Act.