Our paddle mixer is the perfect tool for mixing up large batches of substrates or breaking up hydrated bricks of coconut coir. The paddle mixer attaches to a standard 1/2" drill and features a steel shaft with an aluminum head. The unit also features a round knob at the head which helps reduce drag on 5 gallon bucket bottoms. A specially designed blade is capable of quickly mixing substrates. Additionally, these paddle mixers will effortlessly break up hydrated bricks of coconut coir. This paddle mixer works with a 1/2 in. drill with a 6 Amp minimum and an 800 RPM maximum.