Summary The Tarot TL250H is a great frame for 18XX motors with M2 screws and 5 inches propellers, however with these arms you can use 23XX motors, M3 screws and 6 inches propellers. Nice vitamins for a nice frame. And of course, you won't ever run out of spares. You can get this frame at banggood: http://bit.ly/1jOpFtP And the great Multistar 2306-2150KV aka Mini Monster motors (Up to 1000g of thurst!): http://bit.ly/1YFNenI I hope you enjoy them. Just like it and share it so, in order to motivate me to do free designs. Thanks. Print Settings Printer Brand: RepRap Printer: P3Steel Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: 0.5mm Infill: 100