The Galena Century Radio (GCR) Rotary Switch 1 x 10 Hex or Round Contact Point GCR – Kit is the same unit designed for the GCR A-Runner and GCR J-Walker Loose Coupler Crystal Radios. The Rotary Switch face measures 3.96” in Diameter. The 1/2” x 3” backing plug is designed to slip into a 3” Diameter ABS or PVC Pipe and can be used in a radio of your own design. The base has been milled so it can be fitted with brass. The Kit contains; one (1) Rotary Switch Base 1 x 10 Point GCR; one (1) package of Brass Contact Points – Hex or Round Contact Point (Package of 10); one (1) package of Brass Stops (Package of 2); and one (1) Rotary Switch Center Assembly – Kits.