ã€DESIGN】 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. ã€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 and it will snap the tile. Step 3: Break the tile into two pieces. ã€USAGE】 The tungsten carbide cutting wheel can be perfectly used for cutting glass tile(not included polished tile), porcelain, mosaic, wall & floor ceramic, stained glass & mirror easily and quickly. Ideal for fixing broken tiles and some special cutting in the corner. ã€SPECIFICATION】 210 x 56.5 x 20.3 mm / 8.2 x 2.2 x 0.8". Max cutting thickness approx.6mm (0.24"). Wheel diameter: 15mm (0.59"). ã€ANTI-RUST OIL】 The anti-rust oil may be appeared on the pliers, it can protect the pliers from rusting. It's not dirty or used products, you can clean it with a towel and it will not effect the function.