Ryobi ZRHP44L 4-Volt 4V. Lithium-Ion Cordless Screwdriver Kit (Certified Refurb) This Certified Refurbished product is tested & certified by Ryobi to look and work like-new. The product includes all original accessories, and is backed by a 1 Year warranty 2-speed gearbox (200/600 RPM) (no load speed) for a wide range of applications 1/4 in. hex collet for fast and convenient bit changes New and improved GRIPZONE over mold for optimum grip and user comfort QUICKTURN allows for easy change between standard driver to stick driver