Aluminium Line Head Alu Double Line Head Bobbin For Gasoline Brushcutter Feature: The shell is made of high quality aluminum alloy pressure casting. Convenient to change, easy to install. Vibration is small,wear well and durable. Fit for most lawn mower,universal use. Specification: Color: Sliver Material:Aluminium Overall size:5x5.7cm Mowing rope diameter 2.4mm Rope Length: 28cm Package Includes: 1 x Trimmer Head 1 x Hexagon Wrench 4 x Mowing Rope 2 x Install Washer