Adjustable Spring Arm Strengthener

This single-arm spring trainer offers adjustable resistance for strengthening chest, shoulders, and arms at home or in the gym.

• Material: Iron
• Color: Black
• Resistance: 40kg (88 lbs)
• Size: 58 × 5 × 5 cm / 22.83 × 1.96 × 1.96 in
• Designed for upper body strength training
• Features dual handle grips and central coil spring for resistance