Toussaint Bump Head Compatible with Most Gas Trimmers and Cordless String Trimmers That Turn Counter Clockwise，Compatible with Echo Speed Feed 400 Ego Ryobi Husqvarna

💐Make sure your trimmer turn counter clockwise! 💐Compare the existing mounting bolt or nut on your shaft of trimmer to determine the new bolt or nut you required! Identify which nut or bolt from the package threads easily counter clockwise onto the trimmer shaft（Must be rotated counter clockwise！） 💐The trimmer shaft compatible with one of following bolt or nut fit for our TOUSSAINT grass trimmer head .Bolt A:M8x1.25-6G-LH ; Bolt B:M10x1.25-6G-LH ; Bolt C:M7x1.0-6G-LH; Nut A:M8x1.25-6H-LH ; Nut B:M10x1.25-6H-LH ; Nut C:M10x1.0-6H-LH. 💐If your shaft doesn't fit above-mentioned bolt and nut please don't buy the bump feed trimmer head. 💐Only for left hand thread on the shaft ! Not for right hand thread on the shaft ! 💐Please read the description pictures and viedos carefully before purchasing! 💐Please contact us if you have any questions! 🍁How to use a TOUSSAINT bump feed trimmer head? 1.Insert i