Model R-1
5-inch (12.7 cm) stainless steel rod for BS3

Model R-2
R-1 including electrode with flexible gold-plated silver wire and cotton wick

Model R-3
5-inch (12.7 cm) stainless steel rod with 2.5-inch (6.4 cm) long gold-plated electrode terminating in 2.5 mm diameter ball

Model BS3
Spare ball and socket joint for CE1

Model CEW
Cotton wick replacement. Sold in packages of 10