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: - 2x volume knob - 2x channel knob. Compatible With Motorola Radios XPR3300 XPR3300E XPR3500 XPR3500E DEP550 DEP550E DEP570 DEP570E MTP3150 XIR P6600 P6600I P6620 P6620I DP2400