Yanying Technology Co.Ltd is specialized in manufacturing garden tools.with welll-equipped testing facilities and strong technical force.good quality, reasonable prices and stylish designs, our products are extensively used in Gardens and other industries. With an experienced and professional team,we have exported our products to many countries and regions all over the world,with especiall Europe and America.Our products enjoy a good reputation among our customers.We welcome customers,business associations and friends from all parts of the world and seek cooperation for mutual benefits. Echo Speed Feed 450 Trimmer Head Replaces: X047000841 Includes adapters to fit most premium trimmer brands Compatible with Stihl, Husqvarna, Tanaka, Echo, Shindaiwa, Redmax, Maruyama & Honda; Speed-Feed 450 Trimmer Head Replacement Compatible for Echo SRM-266 SRM-266S SRM-266T SRM-266U SRM-280 SRM-280S SRM-280T and Shindawa String Trimmer 78890-21001E Weed Eater 99944200903 Holds 20' of .095" line. Max line size .130" Reload in 30 seconds or less, Recommended for trimmers with engines 25cc and larger, Does not fit curved-shaft trimmers. 78890-21001E Trimmer Head Replacement Compatible with Echo Shindawa Speed-Feed 450 High Capacity Trimmer Head High Capacity Compatible with Speed Feed 450. This Universal bump feed trimmer head allows you to easily load up to 20' of trimmer line in under a minute, with no tools or disassembly needed. With features like a split spool to reduce line welding and thick, heavy duty eyelets, the rugged construction of this head is designed for all-day commercial use. Comes pre-loaded with .095" trimmer line.5.Fasy and easy Rapid load system. This is Non-Original Aftermarket Parts.