Features Maximizes user convenience · Unique design that incorporates cordless and ergonomic features. Balance · Great weight distribution for ease of use. Cordless · No limit on usage, reduces fatigue on hand and wrist. Hexagonal keyholes · Six keyholes (in increments of 60 degrees) on the connecting joint of the plugger safely secure and prevent rotation of the plugger during use. Extended battery time for operator · 4 hours of continuous use on a single charge, equivalent to about 1 week of endodontic treatment in a busy practice.