Made of material and practical to use. Delicate and exquisite, highly match the original equipment. Auto Feed System replacement spool eliminates time spent hand-winding string trimmers. Cap protects your line and keep it in place on your string trimmer. Solid and long service life. Easy to install and reliable to use. Specifications: 2 x 4m nylon copolymer resin in spiral design and synthetic trimmer. The portable thread with a diameter of 1.6mm supports fast cutting and longer service life. Fitment: For Lidl for grass trimmer model: PRTA 20-Li A1- IAN 311046, PRTA 20-Li B1- IAN 330831, PRTA 20-Li B2- IAN 334231, PRTA 20-Li C3- IAN 351753, PRTA TA 20-Li. C3- IAN 365589,PRTA 20-Li C3- IAN 385583,PRTA 20-Li C3- IAN 402319, 300 A1- IAN 360066, 550 A1- IAN 311404, 50 A3- IAN 33024. 1, 550 A3- IAN 351652 Color: Black Material: plastic Package Contents: 8 x Spools Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.