The Excelsus Z-Blocker DSL Filter Z-330P2J-A is a universal DSL filter designed with a Z-Blocker compatible model in mind. It features a 10 cm cable length and a variety of connector options, including RJ-11 and DSL/Phone (RJ-11) male and female connections. Made in China by the brand Excelsus, this filter is suitable for use with a range of networking cables and adapters, providing a reliable solution for filtering and connecting DSL/Phone lines in various computer and networking setups.all appear new or barely used price is for all I do not need them so I will not separate.