Merach Twister Arm Trainer – Hydraulic Arm Strengthener, 22-440lb

The Merach Twister Arm Trainer is a premium hydraulic arm strengthener designed for home or gym use. Featuring 22–440 lbs of adjustable resistance, this durable fitness equipment allows you to customize your workout for progressive strength training. The upgraded hydraulic cylinder includes enhanced cushioning to protect against impact, while the double-layer carbon steel frame ensures long-lasting performance without deformation or breakage.

Built with a stable triangular structure and reinforced rivets, this arm trainer delivers smooth, controlled resistance with minimal rebound—ideal for preventing injuries. The ergonomic PU handle offers a comfortable, non-slip grip, and the foldable design makes storage effortless. Perfect for men, women, and all fitness levels, the Merach Twister Arm Trainer is a versatile addition to any strength training routine.