Specialty 3/8" to 1/4" reducing Tee. It has great uses when designing larger systems with a 3/8" backbone. Two ports fit 3/8" tubing and middle port fits 1/4" tubing.
These guys sell grade a products and their customer service is phenomenal. I recommend this website for anyone that is interested in getting misting systems/ supplies and is looking for quality products. I need two more hands to give it four thumbs up =)