Based on this product's specifications, here are some alternatives and similar models
Gear Wheels PRO TMS23021, brand PRO, model YTMS21KZ
Summary description:
Set of gear wheels PRO TMS23021 (model YTMS21KZ) from PRO. This mechanical component set includes precision-cut gears intended for power transmission and motion control in machinery. Suitable for repairs or replacements in compatible gear assemblies, workshop use, and mechanical prototyping. Check compatibility with your device before installation.