These 35 mm long aluminum adapters convert a 6 mm diameter shaft to a 12 mm hex shaft that is compatible with many common hobby RC wheels.
The set includes two adapters, two M4 screws for securing wheels to the adapters, four M3 set screws for securing the adapters to motor shafts, and one 1.5 mm Allen wrench for use with the set screws.
The side of each adapter that mounts to the wheel contains a hole tapped for M4 screws, and the other side of the adapter mounts to a motor shaft with two M3 set screws
Out of the box, the SyRen 50 can supply a single DC brushed motor with up to 50A continuously. Peak currents of 100A are achievable for a few seconds. Made by Dimension Engineering.
1/4" Hex Size, 2" Length, 4-40 Thread Size