Two Way Radio For Motorola XPR3300 XPR3500 Volume knob + Channel Selector Knob Walkie Talkie Replacement Accessories Mounts Quickly and Securely to Your Radio Robust and Durable This Item Is a Replacement Part of Walkie Talkie Volume Control Knob and Channel Knob Package Contents: - 5x Volume Knob - 5x Channel Knob Compatible With Motorola Radios XPR3300 XPR3300E XPR3500 XPR3500E DEP550 DEP550E DEP570 DEP570E MTP3150 XIR P6600 P6600I P6620 P6620I DP2400