<p>Package include :</p> <p> </p> <p> </p> <p> </p> <p>2 x 12 Ceramic Cups</p> <p> </p> <p> </p> <p> </p> <p>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.</p>