Multi-functionality: reciprocating saw can be used for tasks, from cement floor cleaning to scraping old paint and debris, wall repair, metal rust removal and welding slag removal. Material: This set of four scrapers is made of high-quality carbon steel and is , waterproof, rust-proof, and not easy to deform. Compatibility: It is compatible with most knife saws and reciprocating saws. They free your hands and improve work efficiency. Precision: With the correct blade, you can use the reciprocating saw to achieve accurate cutting and scraping. They have different sizes to adapt to different purposes - 10mm/0.4 inch, 30mm/1.2 inch, 50mm/2 inch for precise cleaning of hard materials, and 100mm/3.9 inch for large area cleaning of soft materials. Cost savings: By combining multiple tools into one tool, multi-functional tools can help reduce the costs associated with purchasing and maintaining multiple tools. color:Black Material:carbon steel Package Contents: 4 x reciprocating saw blades Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.