Features: MULTIFUNCTIONAL ALLOY DESIGN: This double/single ended wrench is from high strength alloy, supporting up to 30kg load for quick installation/removal in just 5 seconds without extra tools. HIGH DURABILITY & CORROSIVE RESISTANCE: The wrench features a specially treated surfaces with 3x better rust resistance than standard steel, lasting up to 10 year even in harsh weather. . LIGHTWEIGHT & EASY TO USE: Weighing only 160g (40% lighter than traditional wrenches), it’s effortlessly to carry and operate Great for vehicle maintenance. PRECISE FIT FOR BOLLARDS ADJUSTMENT with accurate measurement markings to perfectly matching mainstream specifications, preventing slippage and errors during installation. ERGONOMIC SLIP Proof GRIP with antislip handle for secure grip even in wet conditions, reducing hand fatigue during prolonged use. Enhances safety and comfort for workers handling extended tasks. Specifications: Component: alloy Size: 17.6x2.5cm/6.9x0.98in Type： double head/single head Applicable scenarios: Anti-collision pillar modification, mechanical adjustment Package Includes: 1PC Anti-collision column wrench note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.