String Trimmer Head Replacement For Echo Eater Speed-Feed 400 Srm-230, 2 Pack Product Features ?Universal Weed Eater Head - We used a much stronger material for the string trimmer head, which promises great durability while reducing the risk of breaks or cracks. Trimmer Head Diameter: 3-3/4". Bolt Size: M10 x1.25 mm. It can reach 10,000 RPM Max rotation speed, ensuring continuous and effective operation. Please note this grass trimmer head doesn't come with adapters, it's strictly for Straight Shaft Model Trimmers not fit Curved Shaft Trimmers. ?Upgraded Line Storage Capacity - The female hole is 10mm/0.39'', make sure the size fits your string trimmer before purchasing. This weed eater trimmer head has a large-capacity line storage. Line wheel height: 0.59''. Line wheel width: 0.2''. It's suitable for most sizes of trimmer lines, such as 0.080'', 0.095'', 0.105'', and 0.130''. (Trimmer lines included, length: 6.56ft.) ?Without Disassembly - Our trimmer head makes it easy to replace the lines without disassembly. First, make sure to align the holes when assembling. Then, take the trimmer line along the hole through. Finally, turn the cover clockwise to shorten the lines. ?Our weed eater bump head is compatible with Echo Speed Feed 400 SRM-225 SRM-210 SRM-2100 SRM-200 SRM-230 SRM-250 SRM-265 SRM-266 SRM-280 GT225 T195S T220 T222 T230 T231 trimmer head straight shaft trimmer. ?Our weed eater trimmer head replacement is compatible with Echo PAS-210 PAS-211 PAS-225 PAS-225VP PAS-225VPB PAS-230 PAS-231 PAS-260 PAS-261 PAS-265 PAS-266 PAS-280 PAS-2100 PAS-2400 PAS-2601 trimmer head straight shaft trimmer. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!