Package include :

2 x 12 Ceramic Cups

The RX WELD 12 Ceramic cup kit includes 2 ceramic cups and a spare diffuser .

The ceramic version will thread on a WP 9 20 25 or the 17 Kit . It does not require Orings. The RX WELD 12 Ceramic cup will handle up to 200 amps non continuance .

And it is recommended for DC only applications.