Balancing props is essential in electric flight. You cannot assume that a manufactured prop is already balanced. The prop balancer featured here is simple and effective. You insert the propeller between the two cones and do them up finger tight. You then hold the balancer shaft between your thumb and pointer finger holding the pointy ends just firm enough to allow the prop to rotate. The heavy blade will drop to the bottom. You need to sand the top surface of this blade with very fine sand paper until it balances.

Specification:
● Size: D14×Ф2.2×L49mm×M3
● weight: 5.4g

Package content
1 No: Simple prop balancer