About this itemHardware: This product is made of high quality aluminum. Good quality, fine workmanship, durable Packing: 3 bubble paddle tools, roller head size is 50mm x 10mm, 70mm x 21mm, 50mm; the length is about 310mm. Eco-friendly and efficient: In the production process, the bubble tool can save resin, save time and money, and improve construction efficiency. > /> Scope: widely used in FRP industry, generally used for rolling and forming. Internal and external punching of the product Function: Used to level and compact the resin coating, remove air bubbles, improve the strength and flatness of FRP. It is an economical and practical manual laying tool in the production of fiberglass. Product Description This product is made of aluminum alloy mechanical surface, strong and durable. 39; FRP. In the production process, it can save resin, save time and money, and improve construction efficiency. It is widely used in the production of FRP industry for leveling and compacting air bubble resin coatings, and is often used for internal and surface perforation of products. It can also improve work efficiency and product quality. Features:This product is made of aluminum alloy mechanical surface, which is durable. Used to improve the strength and flatness of steel to glass. During manufacturing, it can save resin, save time and money, and improve construction efficiency. Widely used in industrial FRP production to level and compact resin coated air bubbles, often used for internal and surface perforation of product cylinders. It can also improve work efficiency and product quality. Features: < br/> Total length: approx. 31cm. Roller head length approx. 50mm, 75mm, 50mm. Product weight: approx. 323 grams. Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain difference in color, the actual object received shall prevail.