Dremel 4000 Rotary Tool Kit + SM20 SawMax + MM20 Multi-Max Three Tool Combo Pack Dremel 4000 Rotary Tool Kit + SM20 SawMax + MM20 Multi Max Three Tool Combo Pack from Dremel (manufacturer refurbished) High performance motor for maximum performance at all speeds Electronic feedback for consistent speed under load Variable speed provides maximum control and precision Separate on/off switch and speed control dial for the perfect speed every time