User Friendly Operate: Plug and insert design with a color LCD displaying real time voltages / current eliminates setup hassle, boosting efficiency for engineers with dynamic workspaces Compact & Portable Design: Featuring a lightweight body, this handheld grinder is easy to carry and store, ideal for technicians needing mobility in workshops or outdoor repair scenarios Precise Grinding: The HMTD71 grinder delivers high precise grinding for phone repairs and tweezers polishing, with 4 speed and ≤10000RPM for detailed working on small metal / hard items like and jewelry Multifunctional Applications: Beyond phone repairs, it polishes and trims various small tools ( scissors, probes and more) with reversible rotation, catering to professional in precise maintenance, Manufacturer: Oxxggkao