Based on this product's specifications, here are some alternatives and similar models
Brush cutter/string trimmer accessory EINHELL 3405086 — replacement head, compatible with Einhell, size 90×60×95 mm
Summary description:
Replacement brush cutter/string trimmer accessory EINHELL 3405086 in black. Compatible with Einhell trimmers, packed as 1 piece. Physical dimensions: width 90 mm, depth 60 mm, height 95 mm. Intended as a spare head/attachment for garden trimming tasks such as edge trimming, lawn maintenance and cutting grass in tight areas.