Based on this product's specifications, here are some alternatives and similar models
Hex key with ball end Jonnesway H06SM140 — 4 mm, very long
Summary description:
Jonnesway H06SM140 is a very long hex key (Allen key) with a ball end, 4 mm size. Designed for accessing recessed or angled fasteners, it provides extended reach and angled entry up to typical ball-end degrees. Suited for mechanical, automotive and assembly work where extra length and ball-end maneuverability are needed to reach hard-to-access hex sockets.