Stanley Rotary Drills are the most trustworthy rotary drills. It features a powerful motor to assure excellent performance and long durability. The rotary drill comes with adjustable variable speed to enhance pre-set speed control. The key holder securely maintains the chuck key to avoid a loose operation. The drill comes with an ergonomic design to make it easy to hold while operating. The major highlight is the integrated belt clip to allow you to use it hands-free. The lock-on button offers one hand control and assures complete user safety. Reverse function feature helps in convenient screw driving. Stanley STDR5510 is the best rotary drill to rely on.