Based on this product's specifications, here are some alternatives and similar models
Lever Grease Gun NEO tools 11-500 — 400 ml reservoir, 30 cm hose
Summary description:
Lever grease gun NEO tools 11-500 with a 400 ml reservoir and a 30 cm hose for precise lubricant application. Designed for manual dispensing of grease into bearings, joints and machinery fittings. Features a lever mechanism for controlled pressure, hose for access to tight points and compatibility with standard grease cartridges and bulk filling for workshop and field maintenance.