Premium Glass Clamp & Breaker Clamp Set: Made of rust-resistant carbon steel, the PVC rubber handle is ergonomic and soft, allowing you to grip comfortably. Adjustable glass clamp to control the amount of pressure applied, easy to adjust for different glass thicknesses. The breaking pliers with spring-loaded jaws to release pressure easily, improving breaking efficiency.With rubber tip: made from high density synthetic polymers. With plastic tips on the jaws, the rubber shell protects the glass or mirror from tool scratches or chips. Rubber tips hold the glass securely.【Excellent Pencil Style Oil Glass Cutter Set】Premium carbide cutting wheel and alloy handle, absolute precision guaranteed to ensure smooth operation. The automatic oil delivery system keeps the wheel lubricated all the time when applying pressure with the glass cutter, ensuring a clean and smooth cut.Wide Application: Works wonders for melting glass, breaking small glass pieces for crafts, mosaic, tile, mirror, stained glass cutting, ceramics, tile, crystal mosaic, window glass. Ideal for all types of DIY and home decorating projects.