Design Please note that the cutting wheel can roll and the plastic breaker lever is not fixed. High leverage design provides maximum grip. Two-color TPR ergonomic handle, non-slip and comfortable to hold. Spring action reduces hand and wrist fatigue for effortless collage projects. How to use Step 1: Place the tile on a flat surface. Then scratch the tiles with a cutting wheel. Step 2: Put the clip part of this mosaic pliers on the top, it will catch the tile. Step 3: Divide the tile into two pieces. Uses Tungsten carbide cutting wheels can be perfectly used for cutting glass tiles (not including polished tiles), porcelain, mosaics, wall and floor ceramics, stained glass, and mirrors, easily and quickly. Great for repairing broken tiles and some special cuts in corners. Dimensions 210 x 56.5 x 20.3mm / 8.2 x 2.2 x 0.8". Maximum cutting thickness approx. 9.5mm (0.37"). Wheel diameter: 15 mm (0.59 in). Anti-rust oil There may be anti-rust oil on the pliers, which can protect the pliers from rust. It is not a dirty or used product, you can clean it with a towel without affecting the function.