Product name:HSKRC 57 Series X200 X235 X268 X292 X324 H215 Frame Kit w/ PDB Damping Plate for RC FPV Racing Drone Damping plate: The first apron fixed spring-type damping plate, allowing the flight controller to get the maximum shock absorption effect, the drone flight is more stable, and effectively reduce the chance of the bomber. Suitable for 2204 2205 2306 series motor. . Description: Product Category:Frame Kit Brand name: HSKRC Item name: 57 Series Frame Kit Wheelbase: T-X: 200mm(4inch) 235mm (5inch) 268mm(6inch) 292mm(7inch) 324mm(8inch) H-X: 215mm(5inch) Arm thickness: 4mm Top plate thickness: 4mm Bottom plate thickness: 1.5mm Side plate thickness: 2mm Single frame weight (with PDB): X200 (137g) X235 (142g) X268 (150g) HX215 (142g) Camera mounting hole distance: 29mm for Swift Eagle Most cameras on the market such as FOXEER Flight Controller double mounting hole distance: 20*20mm (for mini flytower) 30.5*30.5mm (standard mounting hole position such as CC3D F3 F4) Other flight controller with outer casing can also be placed Packing list: 1 x 57 Series Frame Kit