Compatible Model: It can fit all brands Sthil, Husquarna, Stiga and many other brands. Not suitable for Load & Go Simple Loading System – Tap & Go Cord flow system: interchangeable reinforced aluminum eyelets - Reinforced steel button - Reinforced plastic structure - Head with D.130 - M10 x 1.25 - Internal insert - Maximum d. 4 mm round - 1 refill of 7 m of wire d. 3 mm round Wear-resistant: button with replaceable steel reinforcement - 2.4 to 4 mm round or 3.5 mm square wire Application: Align the cloves. Pass the thread in the head through an eyelet and let it come out on the opposite side until you have two edges of equal length. Turn the shaped button anti-clockwise. The head is ready for use. Internal connection M10 x thread 1.25 - Universal for brush cutters from Efco and Oleomac - For all other brush cutters, ask about compatibility or buy suitable inserts < br/>