Upgraded Speed Feed 400 Trimmer , Compatible with Echo, , Husqvarna, Maruyama, Redmax, Shindaiwa and Stihl Trimmers, Abrasion Resistant Universal Weed Eater Replacement

Same as Which Trimmer Models: Trimmer replacement number compatible with Echo Speed feed 400, 99944200907B

Which Weed Wacker Model are Compatible: Compatible with Echo SRM-200, SRM-210, SRM-222, SRM-225, SRM-230, SRM-236, SRM-250, SRM-265, SRM-266, SRM-280, SRM-2100, SRM-2320, SRM-2400, SRM2450, SRM-2600, SRM-2620, SRM-3020, SRM-335, DSRM-2600, DSRM-2100, DSRM-2620, PAS210, PAS211, PAS225, PAS225VP, PAS225VPB, PAS230, PAS231, PAS260, PAS261, PAS265, PAS266, PAS280, PAS2100, PAS2400, PAS2601, MTA-AB, MTA-DTB

Which Weed Wacker Model are Compatible: Also fits , Husqvarna, Maruyama, RedMax, Shindaiwa and Stihl trimmers (for use with straight shaft trimmers, not for use with crankshaft trimmers). If your brand or model is not listed, compare the existing mounting hardware on your model with the ECHO mounting and/or bushes to determine the correct parts required

Size: Bolt Size: M10 x 1.25LH; Overall Width: 4-1/4"; Overall Height: 2-9/16"; Pre-loaded with 13-ft of .105-in string, compatible string's diameter: .065", .080", .095", .105", or .120"

Performance Crush: material upgrade brings good quality. As we all know, the weed eater rubs against the ground at high speed, the temperature rises and it is susceptible to wear. Our upgraded trimmer is made from nylon and glass fibre material, which improves heat resistance, wear resistance and hardness by 30% to 40%, resulting in a longer service life. This is a significant improvement in performance over other plastic weed eater heads in use.

No Disassembly for Loading and Easy Feeding: Simply insert the line and turn the knob to reload the line in less than 30 seconds (no kinks in the winding process). And when it's time to feed, a light tap on the extends the line without stopping and making manual adjustments. Designed for lawn care professionals to provide reliable convenience.