Place of Origin
Jiangsu, China
Surface treatment
Oil Tempered, Galvanized, Powder, Electrophoresis
Packing
Inner: Plastic Waterproof Film; External: Crate
Inner diameter
1-3/4", 2", 2-5/8"
Quality
Spring Fatigue Testing
Working lifespan
10 years warranty
Delivery Time
15 days for one container
Direction
Left hand & Right hand
Product name
High Carbon Garage Door Torsion Spring