**Product Specifications:**
**Brand:** Peak
Adjustable arm strengthener
Three adjustable levels for different resistance options
Thick carbon steel spring for strong and durable rebound
Anti-slip silicone handle for a secure grip
Thickened safety rope to prevent slipping
Reinforced metal locking buckle for secure adjustment
Scientifically designed for progressive strength training
Multi-functional for comprehensive muscle training
Metal locking buckle for easy resistance adjustment
Thickened carbon steel spring for explosive strength training
Multi-layer composite steel tube for added safety
Anti-slip handle with soft rubber for comfortable grip
Thickened safety rope with high toughness for secure workouts
Suitable for strengthening arm muscles, chest muscles, and back muscles
Available in two resistance levels: 30-50KG and 50-70KG
Dimensions: 30-50KG - 67CM length, 25CM spring size, 1.55KG weight; 50-70KG - 68CM length, 27CM spring size, 1.65KG weight
Recommended for fitness enthusiasts and experienced individuals
Detailed instructions for various arm exercises
Safety features include steel pipe fixing slots, metal locking buckles, and spring protection casing
Color: Black
Materials: Carbon steel, ABS, silicone
Target muscles: Biceps, triceps, chest, shoulders, back
Usage precautions and instructions provided for safe and effective workouts
**Note:** The information provided is based on the input content and may require further verification for accuracy.
