Block: Use polyethylene, it has high strength and wear resistance. Suitable for most laminate and hardwood flooring systems. 3 Different Edges:for V-shaped slots (3.5mm–5.5mm), L-shaped slots (6mm–3/8in), and large L-shaped slots (10mm–12mm), this tool supports a variety of floor thicknesses. Easy to Use:Gently press the tongue-and-slot joints or edges of resilient wood tiles, laminate, or hardwood flooring panels together to create a tight, seal-less fit. Double-surfaced with Slot:Its unique double-slot design is suitable for both tongue-and-slot flooring, improving installation efficiency. Broad Application: Ideal for laminate and synthetic floor installations, this tool is a valuable addition for professional installers and home users, simplifying floor projects.