Replaceable Volume Knobs For The BT20A PRO BT30D PRO TB10D BT20A And BT30D Amplifier _x000D_ _x000D_ _x000D_ Replaceable Volume Knobs For The BT20A PRO, BT30D PRO, TB10D, BT20A And BT30D Amplifier _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ The P3, BT20A, BT20A PRO, BT30D, BT30D PRO, and TB10D amplifiers are equipped with replaceable orange knobs. _x000D_ To replace the knobs, simply grasp the existing knob firmly and pull it straight off the shaft. Then, align the new knob onto the shaft and press it firmly in place. Make sure that the new knob is securely attached before use. _x000D_ _x000D_ Colour:Orange _x000D_ Material:Aluminum Alloy _x000D_ _x000D_ Package Contents: _x000D_ 1 * Volume Knob _x000D_ _x000D_ Only the above package content, other products are not included. _x000D_ 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_