Upgrade Your Trimming Experience
✨ Introducing the Speed-Feed 450 Trimmer Head! It replaces OEM parts 99944200903 and X047000940. Ideal for straight shaft trimmers, it offers a 4-1/2 in (11.43 cm) diameter and a 10mm x 1.25mm LH thread. Max RPM is 10,000, with a 20' line capacity of 0.095", fitting up to 0.130" line. Enhance your lawn and garden maintenance with this upgraded accessory.








Key Features
• Material: ABS + High-Strength Nylon
• Reload Time: < 30 seconds
• Compatibility: SRM-266, SRM-266S, SRM-266T, SRM-266U, SRM-280, SRM-280S, SRM-280T
• Durability: Heavy-duty, impact & crack resistant
• Issues Fixed: Stuck head, no spin, stripped threads
Shipping & Support
📦 Ships from a US local warehouse in 3–7 business days. For any questions, contact us for friendly support. We resolve issues promptly. Enjoy a hassle-free trimming experience with the Speed-Feed 450 Trimmer Head.