The Kenwood KMB-28 is a multi unit charger 6-Unit Charger Adapter which fits TK-2400, 2402, 3400, 3402, NX-240 and NX-340 radios. It has 6 adapters for 6 charging trays (not included). This model is made of a combination of metal and plastic. It allows you to charge up to 6 radios simultaneously. Simply connect your existing charger base into the KMB-28 housing to save space and use less power outlets. Multi station charging helps keep the shop organized and the radios always have a home when not in use. Chargers are not included.