Designed for reliable performance with copper and stainless steel tubing, the 2 1/2 in. to 4 in. Standard CTS Press Rings and Actuator Kit is manufactured to achieve optimal distribution of force while maintaining a high level of durability throughout the life of the product. The rings' black, galvanized surface coating helps prevent rust buildup. The rings and actuator work with the are designed for use with the DEWALT® 20V MAX* Press Tool (DCE200—sold separately). Each ring and actuator kit is compatible with most professional-grade press fitting systems. Keep everything organized with the included TOUGHSYSTEM® 2.0 Tool Box.