Drum key drill specification: Material: stainless steel Quantity: 4 Size: Standard drum key: 1.8 * 1.4 inches Fast rotary drum key: 2.6 * 1.9 inches Professional Grade Drum Key Set Unlock the full potential of your drum kit with this premium drum key set, constructed from top-quality stainless steel that ensures durability and resistance to wear. Comprehensive and Versatile Collection Included in this set are three standard square lug drum keys that fit all 1/4 inch square socket drum key tension rods, making it compatible with a vast array of drums. Additionally, the set features a special bearing-style speed key for quick and effective tuning, saving time and making it easier to get the perfect sound. Designed for Comfort and Ease of Use Each drum key drill bit in this set boasts a non-slip handle, ergonomically designed to provide a comfortable grip and reduce fatigue during use. This feature allows for smoother operation and enhances the efficiency of your tuning process. Portable and Essential Tool This drum tuning key set is not only powerful and effective but also conveniently portable. Pack it in your drum bag and take it wherever you go - it's a must-have at home, during rehearsals, and at music festivals. Reliable and Built to Last When investing in this drum keys set, you are securing a tool that will stand the test of time. The stainless steel square lug drum key does not easily wear out, preserving the quality and integrity of the keys for years to come. With this universal drum tuning key set, you can be assured of precise tuning and reliable performance that supports your passion for music every step of the way. Whether you're playing at a gig, in a studio, or just practicing at home, these keys are perfect for precise adjustments.