Main Features:<br />Model: 1147<br />Diameter of shaft: 6.0mm<br />Thickness of center : 7.0mm<br />Length : 280mm<br />Recommended motor: 700KV - 1100KV<br />Fits for GEMFAN DJI F450 500 F550 680 690<br />Comes with adapter rings that adapt to different motor shafts<br /><br />    Specifications<br />Specifications<br />  Model: DJI                                                  <br />                        Type: Propellers                                                  <br />                        Material: Plastic                                                  <br />                        Feature: Tools/accessories of radio control series toy                                                  <br />                        Age: Small parts not for chidren under 3 years                                                 <br />Dimension and Weight<br />  Product Weight: 11.5 g (1pcs Propeller)                                                  <br />                        Package Weight: 0.111 kg                                                  <br />                        Product Size (L x W x H): 28 x 3 x 0.7 cm / 10.98 x 1.18 x 0.28 inches (1pcs Propeller)                                                  <br />                        Package Size (L x W x H): 29.5 x 8 x 2 cm                                                 <br />Package Contents<br />  Package Contents: 2 x Pair of Propeller? 2 x Hole Adapter                                                 <br /><br /><br /><br />                                                                   Product Safety Disclaimer: <br />We do not accept any responsibility or liability for misuse of this or any other product.  All our products are extensively tested to comply with rigorous and strict QC standards.  For certain products (e.g. toys? knives? etc.)? we recommend proper supervision as we cannot be held liable for misuse or accidents.<br /><br />                                                <br />