Questions about Caruba Spigot adapter set

Enclosed according to research: "The Caruba spigot adapter set allows you to extend your spigot or threaded connection to obtain the desired length and thread for attaching accessories. The spigot adapter has a length of 28 millimetres and has a 1/4 inch female threaded connection at one end and a 3/8 inch female threaded connection at the other end. With the included 3/8 inch to 1/4 inch female thread adapter and the 1/4 inch male to 1/4 inch male thread adapter, the possibilities are even greater." Scope of delivery 1 x spigot adapter 1 x Caruba 1/4 inch-3/8 inch female adapter 1 x Caruba 1/4 inch-1/4 inch male adapter