Aluminum material is lightweight, sturdy and hard to break; Common features: Roller used when applying rock wool ceiling materials, etc., is easy to remove and clean after work; Aluminum alloy shaft is used for durability and can be used for a long time. Original corrugated roller reduces the amount of excess glue; Uses anti-splash fins, which reduces bounce and prevents overgluing, making it economical, and improves work efficiency. So it dries out of glue. to prevent The lid also has a handle for easy carrying.