This is the Dawson Precision Awesome Optic front sight made specifically for Glock pistols. Comes with both red and green spare fiber rod and installation tool and instructions. Serrated front contrasts with fiber rod for great sight visibility. .105 wide blade. Two models, one for Novak or factory Glock rear sights which is .160 tall, and another for Heinie rear sights which is .225 tall. Fiber optic rod is sized .040 and comes with red and green fiber optic rods. Comes with front sight tool.