Industry standard for all drums with 1/4 inch socket square tension rods. Perfect for all drums with standard 1/4 inch socket square tension rods. Ergonomic design drum square drive wrench drum Key for better and more comfort. The camber design of the continuous motion key makes it perfect for quickly and easily removing and replacing drum . Color: silver + bright black Material: Alloy The drum keys feature a 1/4 inch socket compatible with most drum key tension rods for simplified drum adjustments. Made of material, solid, and sturdy, and ensures a long time use. Ergonomic design, delicate workmanship, easy and convenient to use. The drum keys are used to adjust the tightness of the drum skin, great kit for drum. Suitable for tuning most drums, such as snare drums, bass drums, - drums. Package included: 1 x Drum Square Key 1 x Continuous Motion Speed Drum Key Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.