[Compatible with Bosch mower models]: Compatible with Bosch series mower models Bosch: Bosch/ART30-36Ll, AdvancedGrassCut36, ART24.ART27, ART30, ART24+, ART27+, ART30+, (from model year 2016)..Aerodynamic oval design to reduce drag.Replacement Coil Type: For Bosch F016800351 Replacement Cap Type: 1600A00X61.[High Quality Material]: The replacement shaft for Bosch F016800351 is made of high performance plastic, safe and environmentally friendly.The nylon cable part is made of high quality nylon imported from Germany.Flexible and Durable Operation: The replacement shaft uses centrifugal force and aerodynamics to reduce air resistance for fast cutting.[Size]: Professional CNC Spool: The Bosch F016800351/1600A00X61 replacement spool is cut and wound by a CNC machine with automatic cable changing.The Bosch F016800351 has a replacement spool length of 6.1 m/20 FT, a replacement spool width of 5.5 cm, a height of 2.35 cm and a diameter of 1.65 mm.The trimmer cover has a diameter of 7.5 cm and a height of 3.3 cm.[Easy Installation]: 1. Stop the engine, remove the cover and remove dirt and old coils.2. Pass the thread through the eyelet of the spool.3. Press the spool down and rotate it to the correct position.4. Replace the cover and check if everything is OK.[Note]: 1 .When using this product, protective measures should be taken to avoid injury from overflowing pipes.2. It is recommended to wear safety glasses and long pants when mowing to avoid unnecessary injuries.