QCS Series has a 316 Stainless Steel Coupler body with a Male NPT threaded connection to a Push-to-Connect stem. Also, the OD sizes are 1/4" and 3/8" and the male threads sizes are 1/8" and 1/4". The temperature range is from 0º F to 150º F. The maximum working pressure is 150 psi. Furthermore, the coupler works well with Polyethylene, Nylon, Polypropylene, or Vinyl Tubing. This coupler is also available in chrome-plated brass.