Description: Carbon fiber propeller balancer (maglev) 4-axis rack multi-rotor aerial FPV necessary. Fixed plate using carbon fiber materials using the N45 high performance magnet. The center fixed shaft maglev way to test products to ensure a balance of zero resistance. Applicable to any size and 80 grams or less fixed-wing propeller, marine propeller, car wheels, flywheel, etc. Specification: Model: propeller balancer (magnetic levitation) Material: Carbon fiber Size: 5.5 x 5 x 4 cm / 2.16 x 1.97 x 1.57 inch Weight: 38.1g Package Includes: 1 Piece Propeller balancer (magnetic levitation) Note: Size for manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, Thank you!