The EVANS Pull Cord Drum Key combines the efficiency of power tools with the control of traditional drum key. Its innovative retractable pulley system features two horizontal key heads for rapid tension rod adjustment, while a fixed third head handles precise fine-tuning. Built with robust plastic construction and engineered for hundreds of drumhead changes, this tool transforms your setup and tuning. Say goodbye to tedious manual winding and experience faster, more consistent results every time you change or adjust your heads. Pull cord quickly applies and loosens tension rods. Stationary key can be used like a standard drum key to dial in tuning and hardware. Makes changing drumheads fast, easy & fun. When using Pull Cord Drum Key; The red ring facing up indicates removal of the tension rod. The white ring facing up, indicates the application of the tension rod. All EVANS accessories are designed, engineered and manufactured to the most stringent quality controls in the industry.