It is made of solid alloy steel which increases security level a lot! Combined with outer layer of silicone rubber, its high quality is well protective.

Features:

• Upgraded U-Lock-high-quality and high-strength extra thick alloy steel with silicone rubber.
• Main Highlighs - alloy lock cylinder, extra thick steel, waterproof and rustproof, safe and anti-theft.
• Double-side Open-improves anti-theft function and highly upgrades security level.
• Fashion Design - irregular polygon texture, simple and generous.
• Extra Thick Lock Cylinder-13.98mm diameter, it once again improves the level of anti-theft performance