Drum Key are made of chrome-plated steel construction.Industry standard for all drums with 1/4 inch socket square tension rodsIncludes 3 standard drum keys, and 1 continuous motion speed drum keyPerfect for all drums with standard 1/4 inch socket square tension rods.The spinning camber design of the continuous motion key makes it Perfect for quickly and removing and replacing drumheads.drum keys made of chrome-plated steel, and are fit for all drums with standard 1/4 inch socket square tension rods whether electronic drum kit or drum kit. This economical bundle includes 2 standard drum keys and 1 continuous motion speed drum key. money, 4 drum keys for the of one. The spinning camber design of the continuous motion key makes it Perfect for quickly and removing and replacing drumheads.Color: Silver: 4 PCSMaterial: Chrome-Plated SteelPacking size: 12*8cmPackage included:3 x Standard Drum Key1 x Continuous Motion Speed Drum KeyOnly the above package content, other products are not included.Note: Light 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.