Usage: Mark your cutting range with a washable marker. Simply line up the mid-point of the shaped curved jaw with your score and press down to cut glass tiles, stained glass, mirror, glass gems or smalti. Material: Precision-machined pliers are made of high carbon steel with heat treatment, provides strength and durability. Effort Saving Design: Reset spring loaded for easy use, greatly improving overall control and reducing hand fatigue. Comfotable Handles: Ergonomically designed non-slip soft PVC handles, hold firmly and comfortably. Warm Tips: Please wear eye protection when operating. There may be some oil on the surface of the plier, it is normal phenomenon. A little oil can make the tool work more smooth and protect the tool., Manufacturer: LEONTOOL