SPEEDWOX Glass Tile Nipper 8 Inches with Strong Plastic Breaker Bar Scoring Wheel for Quickly Cutting Porcelain Mosaic Ceramic Mirror Professional Glass Cutters Score Tile Tool Heavy Duty PliersDESIGN Please note that the cutting wheel cannot scroll. Plastic breaker bar is not fixed, it can sway. High leverage design for maximum gripping strength. Bi color TPR ergonomic handles for anti slip and comfort grip. The spring action reduces hand and wrist fatigue for easy tiling project. HOW TO USE Step 1: Place the tiles on a flat surface. Then use the cutting wheel scratch the tile. Step 2: Put the clamp portion of this mosaic nipper on the top