oil pump jack 3d model

A small, sturdy 3D model of an oilfield pump jack designed as a keychain charm. Simplified mechanical details with thick, durable proportions suitable for 3D printing. Include the walking beam, horse head, counterweight, and base platform, but keep all parts chunky and non‑fragile. Add a solid loop or ring attachment integrated into the top or back of the model for a keyring. Clean, modern, industrial style with no thin rods or delicate parts.