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These optional brass caster blocks are an excellent upgrade for your TRX-4M rock crawler
and other essential gear
7mm (Length x Width x Height)
Fits 7mm hex hubs and most 1
SMC Racing Cell Voltage Tester TRX-4M These optional brass caster blocksThis is a tester that will display the cell voltages of a 2S to 6S. Works on packs that have a JST XH connector. Simply connect the balance connector to the tester and it will display the cell voltages.
