Electric screwdriver tension balancer

• Bearing weight:0.5-1.5kg
• Bearing weight:1.0-2.0kg
• Specification 1.5-3.0kg
• Specification 3.0-5.0kg
• Product description: 1. Reduced staff fatigue and increased work efficiency. 2. Balancer saves factory space and reduces production cost. 3. Spring balancer can prevent tool damage. 4. The spring balancer has no electr
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