ccnlhzm Trimmer Gear Head Gearbox Head Compatible with Echo SRM-225 SRM-225i SRM-225U SRM-266U SRM-2620 SRM-3020 SRM-280U Weed Eater Head?Replacement P021008181?P021008182 is up for auction in Patio, Lawn & Garden. The current bid is $6.00, 86% below the $43.97 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.