ALEKO® 2SBL-FD1 Steel Yellow Folding Safety Parking Bollards are 2-1/4" (5.7 cm) diameter, 25" (63.5 cm) extended height folding steel round bollard posts. Lot of 2! Foldable bollard is convenient used in place where vehicles are required frequent to restrict or allow it to pass. Using a key to fold bollard down or erect it easily. Folding steel barrier post for parking control and security. Base plate must be lagged to ground for proper installation. Steel construction. Powder coat yellow finish. 25" (63.5 cm) extended height. 4" (10.2 cm) collapsed height. Terrific value and fast shipping!