Use the Viega ProPress 1/2-inch Coupling with No Stop to make secure extensions and repairs of ASTM B88 and B75 copper tubing. This coupling has no internal stop, allowing installers to slip it into place in tight locations.Thanks to its easy press connections, installing the coupling is quick and efficient. Unlike traditional pipe fittings, there's no need for calibration, flame or heavy equipment. Instead, Viega ProPress couplings install in just three easy steps: cut the copper tube to length and remove any burrs or imperfections, measure and mark the fitting depth, and use a press tool to connect the Viega ProPress coupling for a secure connection. Smart Connect technology identifies unpressed fittings during pressure testing to ensure proper connections the first time and eliminate callbacks. Approved to the most codes and standards of any other copper press fitting system (IPC, UPC and NSF included), and with more than 400 different fitting configurations to suit virtually any type of plumbing or HVAC job, Viega ProPress pipe fittings are the top choice of professionals around the globe.