XRP 70mm 13 Blade Fan Unit 2800Kv is For 4s With Dynamic Balanced

Ahoy there! Here's the product description you requested:
- Material: Fibre Reinforced Nylon (Rotor)
- Motor: XRP-2960-2800kv Inrunner Motor
- Shaft Adaptor to Motor: 4mm
- Static Thrust: 1730g / 70A
- Weight: 250g
- Working Voltage: 14.8v (4S)
- Pre-balanced by a balancing machine
- Balance weight in spinner
- Combo installed in proper position
- Do not disassemble fan unit and motor, or balance work will fail
There you have it, matey!