The Rule 360 provides outstanding quality and value. It is economically priced and designed for small boats. 3/4" (19mm) discharge outlet. 12 Volts DC unless noted. Year after year, the Rule-A-Matic has been the switch of choice for boaters the world over. Our latest design now includes a removable...

The product is 3/4" 19MM Bi Hole Saw. Easy to use. The product is manufactured in China.

Rule offers two 800 gph (3028 lph) styles - square and round versions. The square model (20F) offers 36 mounting variations as well as a gas resistant strainer base. 3/4" (19mm) discharge outlet. 12 Volts DC unless noted.

The Rule 500 offers many design features while keeping size and cost to a minimum. Especially popular on smaller craft, Rule 500 pumps are unmatched in pumping power and longevity. 3/4'' (19mm) discharge outlet. 12 Volts DC unless noted.

6 blade impeller ; Width: 3/4" (19mm) Diameter: 1-9/16" (39.7mm) ; Drive D Slot ; For engine cooling