brand new and high quality Feature: Radio magnetic balance adopts large-size high-quality for HAM radio equipment It can easily produce high-performance balun to ensure efficient radio transmission and reception. It allows you to fully enjoy the fun of DIY. 4:1 balun is suitable for long-line antennas, with manual day adjustment or automatic day adjustment. Compact size , easy accessibility, suitable for outdoor use QRP stations and set up . Easy to erect and simple to use. Specifications: Maximum Power: 50W Material: Plastic and Metal Dimension: approx.5.2x5.2cm/2.05x2.05in Color: As pictures shown Quantity: 1 Pc Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1 x 4:1 Balun (other accessories demo in the picture is not included)