The in-line flaring tool lines the adapters cone and tube in a perfect line making perfect flares every time and less risk of breaking adapters. with the clamp putting pressure directly over the tube you greatly reduce the chance of the tube slipping from the clamp. Also this increases the overall life of the clamp by not wearing down the teeth inside from repeated slipping. the slender low profile design of this tool allows the user to make flares on the vehicle. Flares can be achieved along frame rails or areas in the engine compartment saving the user time from having to remove components or complete lines to make repairs. finally the in-line flaring tool will be competitive from a cost standpoint with the bar type while blowing it away in quality and function. When it comes to a hydraulic or vise type tool it will return the same quality results and ease at less than of the cost. metric kit (4.75mm 5mm 6mm in case)