The VF-25 18 gauge medium crown stapler with vinyl siding yoke drives 5/16" to 1" staples with a 3/8" medium crown . Designed for niche applications in construction and manufacturing, the VF-25 is suited specifically for vinyl-siding installation and comes with a one-year manufacturer's warranty. Features on the Vinyl Fast VF-25 siding stapler include a bottom-load (jam-free) magazine, low noise and vibration output, 360 degree adjustable exhaust, quick-release nose and soft rubber comfort grip.