MATERIAL: Metal construction, solid and durable to use, lightweight for easy carry FITS- all Drums with 1/4in Socket Square Tension Rods CONTINUOUS MOTION SPEED KEY- a handy speed key, which is terrific when changing drum heads PRACTICAL- great for adjusting the tension rods on drums for the desired pitch The regular keys have the right size, weight and feel for tuning drums, plus there's 3 of them, in case you lose one (which you probably will ). It also comes with a handy speed key, which is terrific when changing heads. FUNCTION: essential drum accessory will make sure your drum skins are always in fine tune colour: Silver Material: Metal Package Contents: 4 * Drum Keys Only the above package content, other products are not included. Note: Light shooting 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.