A B Base Plate Length: 8" , Base Plate Width: 8" , Bollard Material: Steel , Color: Yellow , Door Width: 10 ft. , Includes: (2) 127" Long Chains, (2) Bollards - each with (4) Mounting Holes 7/8" x 1 1/4", (1) Chain Post Handle, (4) Quick Links, and (16) Self Tapping Screws , Material: Steel , Number of Bollards: 2 , Number of Chain Post Handles: 1 , Number of Chains: 2 , Number of Mounting Brackets: 4 , Number of Quick Links: 4 , Number of Self Tapping Screws: 16