【 Steel Bollard Driveway Barrier】 Safety bollards post is made of steel which is built for maximum strength and , for maximum protection. The steel bollard's surface with a protective coating can fully prevent wear and oxidation, and avoid rain andt to extend the service life 【High Visibility Safety Bollards】Bright yellow can improve visibility. Our yellow safety bollards help you to set up a clear path so you know exactly where you're to go, at the same time increase safety by preventing accidents 【Easy to Install】yellow bollards with 4 anchor bolts are easy to install on the base plate, the quick assembly can save your effort and time. You just need to find the right spot in the ground or concrete, drill holes, insert expansion screws and tighten them 【Unique Bottom Design】 Different from other bollards that reserve holes at the bottom, our safety bollard seals the bottom. For there are many force surfaces and when encountering impact, it can be more stable so that increase safety column service life 【Used Widely Outside】 bollards are used on construction sites, on streets, in parking lots, in schools, and in front of buildings. They look great! Protect pedestrians from traffic collisions; Alert drivers entering risk-prone areas; Stop neighbors from parking on the sidewalk and damaging it