Features: 3.Application: Suitable for all rudder surfaces (aileron, elevator, rudder, etc.), flexible rotation and easy connection.4.How to use: When using it on a remote-controlled aircraft, first make slots at both ends of the board, apply hot melt glue into it, and then insert the hinge, it will be very firm and cannot be pulled out. If it is used on a balsa wood surface, it can be glued directly with glue.5.High-quality material: Made of plastic, long service life, and wear-resistant, not easy to wear; small size, light weight, easy to carry.6.Hinges have 6 holes on each side for maximum support.Specifications:Material: Plastic & NylonColor: SilverBrand name: BQLZRSize:Unfold Size 1: 25 x 11 mm / 0.98inch x 0.43inch (L x W)Unfold Size 2: 28 x 16 mm / 1.1inch x 0.63inch (L x W)Hole diameter: 1 mm / 0.04inchWeight: 11 gPackage include:10 x RC Airplane Pinned Hinges (11 x 25 mm)10 x RC Airplane Pinned Hinges (16 x 28 mm)