The GEPRC DoMain 4.2" Frame is ideal for freestyle builds. This kit includes all carbon fibre hardware and required screws for assembly. Package Includes: 1x 2.0mm top plate 2x 4.0mm front drone arm 2x 4.0mm back drone arm 1x 4.0mm mid plate 1x 2.5mm bottom plate 1x 3.0mm mid plate 1x front aluminum component(left) 1x front aluminum component(right) 1x middle aluminum component 1x tail aluminum component(right) 1x tail aluminum component(left) 1x left side plate(black) 1x right side plate(black) 1x Screw Package Specifications: Model: Domain 4.2-inch version Wheelbase:190±3mm Top plate thickness:2.0mm Base plate thickness:2.5mm Drone arm thickness:4.0mm FC mounting hole size:20.5mm*20.5mm & 25.5mm*25.5mm Motor mounting hole size:9*9mm & 12*12mm VTX mounting hole size:36mm x 36mm & 28mm x 28mm Camera size: 19-20mm Recommended propeller size:4.2-inch propeller Weight: 110g±5g