Specification:_x000D_ Item Type: Glue Nozzle_x000D_ Material: rubber_x000D_ 3 Size: 6.5R 10R 13R_x000D_ Glue Nozzle Scraper Caulking Grouting Sealant Finishing Clean Remover Tool 3Pcs_x000D_ Product selling point:_x000D_ Simple installation, convenient one-handed operation._x000D_ Helps fill in cracks and remove excess filler._x000D_ Easily handle cracks between tiles or bricks._x000D_ Glue Nozzle scraper pad, durable and no thorns, wearproof._x000D_ Suitable for rough or uneven surfaces and corners, also for tile or brick joints._x000D_ _x000D_ How to use:_x000D_ 1. Clean work area to remove water and foreign substance._x000D_ 2. After installing silicon in the gun, install Caulk Nozzle._x000D_ 3. Stand the silicon gun vertically (90 degree) for direction of progress._x000D_ 4. As checking silicon output at the front, control the speed and work._x000D_ 5. When breaking away from the work, smooth it with the back side of Caulk Nozzle._x000D_ 6. Besides, Caulk Nozzle can be used alone as trowel._x000D_ 7. Clean the surface with the scraper._x000D_ 8. After solidify, Scrap can easy to take out.