Metric,- Chromium-plated finish to avoid corrosion,- "SUPER DRIVE" Lobular design with no corners that eliminates stress and provides maximum strength and durability,- Heat-treated alloy steel for maximum resistance and durability,- Made of Chrome Vanadium steel
- Coupling design,- Welding installation,- Made of forged steel with natural finish,- Use: Metallic doors and windows,- Special design that reduces friction, lubricated from the factory