Check the listing for details. Tecomec Universal Mount Fixed-Line Trimmer Head for Ryobi Stihl Husqvarna Echo. Condition: New. Listed at 16.98 USD. This is a high quality made in Italy Tecomec Universal Fixed-Line Trimmer head with (8) cutting lines. This patented new concept nylon head delivers high cutting performance with minimal weight. This head is recommended for trimmers up to 33cc. This Fixed-Line head features a centering bore for both 20mm and 1" (25.4mm) arbor shafts. The head is shipped with adapter ring and a washer kit, you do need to use the OEM nut/ bolt/fastener from the trimmer you are installing this on to adapt this head on your machine. The head is shipped with 4 pieces of .105 (3.0mm) square trimmer line, and you can use .130 size line in this head. No tools are required to put trimmer line in this fixed-line head. Tecomec is an Italian company, and they are a world leader in producing Chainsaw, Brushcutter and Trimmer Accessories. Please visit their web site at Tecomec.com to learn more about this company that since 1985 has been selling great product all over the world!