Spring Chest Developer Expander Men Fitness Tension Puller Muscles Exercise Workout Fitness Equipment Resistance Bands

SPECIFICATIONSBrand Name: VKTECHType of sports: Strength TrainingOrigin: Mainland ChinaTraining Site: WaistTraining Site: ARMSTraining Site: LegsTraining Site: ChestDepartment Name: UnisexApplication: Spring Chest DeveloperModel Number: Spring ExerciserFunction: ARMS Functions: ABS engineering plastic carbon spring steel wire tension is full and thick buckle. Specification: Material: ABS Engineering Plastic Carbon Spring Color: Black Red 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 Net weight: (Dual-purpose tensioner) 760g, (Triple-purpose tensioner) 1100g Gross weight: (Dual-purpose tensioner) 760g, (Three-purpose tensioner) 1100g Scope of application: Fitness Usage: Mainly train the muscles of the upper body and forechest. Main efficacy: Exercise arm strength/grip strength/waist strength. Notes: 1. Please allow 1-3cm measuring d