Features: The rubber paddle has a thickness of 6.35mm or 9.5mm. It is selected from styrene butadiene rubber, of paired with stainless steel blades, and has a long service life The snowblower impeller kit reduces the existing gaps between the snowblower impeller blades and the impeller chamber wall. To reduce the chance of snow blockage after working for a period of time, the likelihood of the machine being blocked by snow is lower. The tool kit accessories are complete, and it is difficult to install the tool kit. You can search and learn installation videos first, and pay attention to the installation of rubber paddles and stainless steel blades. If you have any other questions, please consult us and we are happy to answer it for you. Specifications: Component:Stainless Steel+Rubber Type:3 Layers Rubber /5 Layers Rubber Rubber: 1.9x4.9inch Tensile strength: 725PSI(5MPA) Stainless steel plate: 1.3x3.7inch Bolts and lock nuts: Hexagonal bolts are thick threads of 5/16-18x1inch with 5/16-18- lock nuts. Package Includes: 3pcs Laminated Rubber Base Pad 3pcs Stainless Steel Plate 9pcs Bolts And Lock Nuts 9pcs Tapping Screw note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.