SUNCHERS 2 in 1 Cordless String Trimmer, as the trimmer also the edger, you can easily adjust the angle of the cutting head and handle for your needs of the garden, lawns, yard, etc. Feature: Trimmer and edger Automatic line feed and cut Totally 60 minutes working time with charger Ergonomic adjustment for use Package Content: 1 x cordless string trimmer 8 x coils(If you need more, please get “SUNCHERS Spool Line” on Amazon) 2 x battery(If you need more, please get “SUNCHERS battery” on Amazon) 1 x charger(If you need more, please get “SUNCHERS charger” on Amazon) 2 x Spool cap(If you need more, please get “SUNCHERS Spool Cap” on Amazon) User manual Tips for use: 1.Please kindly read the user manual before use. 2.If the string line does not advance, please follow the steps: Step 1: Check if there is enough string line in the spool, if not, install more line. Step 2: Check if the string line is worn too short, you could advance more cutting line. Step 3: Check if the string line is tangled, if it’s tangled, remove the line from the spool, rewind the line, refer to string line feeding instruction and replacement. Step 4: Lines may be welded to themselves. You could lubricate with silicone spray. 3.If you meet any product issues, please chat with us. We will do our best to solve your problem.