Ryobi ZRHP108L 8V Cordless Lithium-Ion 3/8 in. Drill Kit (Certified Refurbished) 3/8 in. chuck for various drilling applications Optimum for drilling and driving into a variety of materials Ergonomically designed handle for comfort during prolonged usage Variable speed trigger to match the correct speeds to the application Keyless chuck for quicker bit changes and less overall downtime