This high volume model opens at 12-17 GPM and can be "turbo shifted" to 20 to 43 GPM

pull and push

Battery Doc Fixed-Handle Panel Mount with Lockout Battery Disconnect Switch allows the electrical circuit to be switched on and off with the turn of a handle

4V long-lasting batteries

MICROFLEX N89 5

Martor Allfit Trapezoid Blunt Tip Replacement Blade | 100 Count se This high volume model opensKeep your cutting tools sharp and safe with these blunt tip blades from Martor. Made from high quality stainless steel, each double beveled, double edged blade slices smoothly while the rounded tips provide added safety during demanding tasks. Tough, precise, and ready to tackle the job. Pack of 100.