Material: ABS Engineering Plastic Carbon Spring
Product Dimensions: (Dual-purpose tensioner) 650*110*30mm/25.6*4.3*1.2in, (Triple-purpose tensioner) 680*340*30mm/26.8*13.4*1.2in.
Scope of application: Fitness
Usage: Mainly train the muscles of the upper body and forechest.
Main efficacy: Exercise arm strength/grip strength/waist strength.