Drop Ear Elbows are used to transition from Copper, PEX, CPVC or PE-RT to threaded pipe such as shower arms or tub spouts. They are similar to female elbows, but have mounting ears with holes for securing to a surface such as a stud or wall and they provide additional stability. SharkBite drop ear elbows are compatible with copper, CPVC and PEX pipe and do not require any soldering, clamps, unions or glue. Their stainless steel teeth bite down and grip the pipe for a strong, dependable connection and their specially formulated O-ring compresses to create a perfect watertight seal. For water supplyConnects copper, PEX, or CPVC in any combinationCertified for underground and behind the wall applications and as a manufactured joint without access panelsExceeds ASSE 1061 Section 1V, 4.1 Materials - Dezincification (DZR) - ISO 6509Certified for potable water and hydronic applicationsAlways consult with local plumbing codes concerning specific applicationsAll components are chloramine resistantTraceability - All products are stamped with a manufacturing dateApproved for burialCorrosion resistant