Low Voltage DC PWM Motor Speed Controller Module with 5Pc 3.17mm Shank Mandrel
- 6PCS Industrial tools: 5 x electric grinder accessories & 1 x PWM motor speed adjuster module
- High speed steel materials, Strong and durable
- Apply to saw blade who's inner hole is 3.2mm, this connecting rod can make a drilling machine changed to be a cutting machine, very easy to use.
