I also own a 1-thread Wolf Trimmer since about 2 years. The device itself is OK, but with the appropriate thread with diameter 1.4 mm I am very unhappy. The quality could actually be better. Often tore the thread and somehow lacked the "power"; whereby the thread when tapping not necessarily nachrutschte.
So I started looking, came to the above items to refill and read the review of "seabird", which made my purchase decision easier. Many Thanks.
The thread of Bosch 1.6mm was quickly wound on the original Wolf-coil (about 4 feet away). Overall, the yarn makes a robust impression. It was then when working. Trimming went faster and easier on the hand, the cord lasts much longer and he slips easily after. The Bosch-thread has a corrugated surface and not smooth, which is perhaps better?
Will order if necessary the Refill Pack from Bosch. Thanks also to Amazon and the shipper.
