This is a complete repair kit for the Wilkins 950XLT series double check assemblies. This kit includes all internal parts to service the Wilkins 950XLT. Both checks are the same in the 950XL series devices. Use caution when servicing as the check covers have spring tension against them. Genuine Zurn/Wilkins repair parts. A seat removal tool is available to assist in removal and installation of seats, see below.