set2: 1 x jack socket + 4 x Drum Keys MATERIAL: Metal construction, solid and to use, 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 !). It also comes with a handy speed key, which is terrific when changing heads. Jack Socket Cover plate for Square Style 1/4 inch (6.35mm) jack socket Has 3 total prongs FUNCTION: essential drum accessory make sure your drum are always in fine tune colour: Silver/Gold Material: Metal/Metal + copper Package Contents: 1 x jack socket 4 x mounting screws 4 x Drum Keys Only 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.