66P Pneumatic High Concentricity Grinding Pen Burr Polishing Machine Grinding Head Engraving Machine Tire Repair Tool

66P Pneumatic High Concentricity Grinding Pen Burr Polishing Machine Grinding Head Engraving Machine Tire Repair Tool Features: Starting and speed regulation in one Thresded link exhaust pipe High concentricity and stable operation It is simple and convenient to replace collet Thresded link exhaust pipe Starting and speed regulation in one High concentricity and stable operation Package List： Grinding Pen x 1