Adjustable Spring Chest Developer Expander Tension Puller Muscle Exercise Tackle Dual-purpose or Three-purpose Tensioner

Functions:
ABS engineering plastic carbon spring steel wire tension is the full and thick buckle.

Specification:
Material: ABS Engineering Plastic Carbon Spring
Product Dimensions: (Triple-purpose tensioner) 68 x 34 x 3 cm
Net weight: (Triple-purpose tensioner) 1.1 kg
Gross weight: (Three-purpose tensioner) 1.1 kg
Scope of application: Fitness
Usage: Mainly train the muscles of the upper body and for chest.
Main efficacy: Exercise arm strength/grip strength/waist strength.