Check the listing for details. 4 Black & Blue D-Shaft Pot Knobs for 6mm 270° DJ-TECH BEHRINGER SOUNDCRAFT. Condition: New. Listed at 9.99 USD. Four (4) Black & Blue 6mm push-on knobs for potentiometers with D-Shaped shaft, 270-degree type. These knobs are high-quality replacement knobs, not original versions, and fit numerous Behringer Mixers, Soundcraft Mixers, and DJ-TECH equipment. Check dimensions below for compatibility. Dimensions:height: 20mmwidth (bottom): 14mmwidth (top): 11mmshaft size: 6mm, D-shapeTo be clear, these knobs are for D-shaped potentiometer shafts. These are 270-degree knobs, which refers to the position of the tabs in the knob's hole, which determines where the pointer is pointing at 12:00. See the second photo/graphic that accompanies this listing for an illustration of what this means - it's easier to explain with that graphic. The photos that accompany this listing show the actual knobs you will receive. They are high quality, something I focus on, and not widely available. These will ship the same day as you order. They should get to you very quickly - as my feedback reflects. Any questions, please ask. Thanks!