Wears due to the abrasive stream, more quickly if nozzles and air jets are not changed promptly (abrasive flows around nozzle, cuts a groove in the Power Head and stops siphon gun from working). Our Power Head is manufactured from Zamac, a harder material than aluminum for longer life, and has a case hardened steel insert for better fit against back side of the nozzle. The result is long life and powerful suction. Requires 10-15 cfm. Also fits old-style S-25 & C-25 Power Guns. Made in USA.
Includes: medium steel nozzle, air jet, and gasket.
3-3/8" long, 3" high, 1" wide.