The SharkBite 45-Degree Angle Street Elbow is intended to make connections easier in tight spaces. One side has a CTS tube adapter and the other has a SharkBite Push Connect end. A stiffener (sold separately) is required when connecting to PEX pipe. The SharkBite Connection System makes any plumbing project fast and easy thanks to unique push-to-connect technology. When you insert a pipe into a SharkBite quick-connect fitting, the fitting's stainless steel teeth bite down and grip the pipe, while its special O-ring compresses to create a watertight seal. No soldering, no clamps, no glue. SharkBite products work with your existing plumbing, are easy to disassemble for changing and reusing fittings, and can be rotated for installation in tight spaces. Whether you need to repair a broken pipe or plumb a whole house, SharkBite provides a push-to-connect solution and leak-free results.