This cutter is the absolute King of Cutters, in my ever so humble opinion. Great balance with a clear acrylic barrel so you can see just how much cutting fluid you have left. When the cutter is applied to the glass the cleverly designed sprung cutting wheel releases the cutting fluid onto the wheel giving a great score every time. Super hard tungsten wheel guaranteed to cut 5 miles of glass.
The difference in impact between a steel wheel (steeper angle-blunt point) and a tungsten carbide wheel (shallow angle-sharp point) has been likened to the difference between the effect of a 250 LB. man in wingtips and his 98 LB. companion in high heels, both walking on a hardwood floor. The pressure applied to the glass is directly proportional to the amount of wheel touching the surface. This is one of the reasons carbide wheels have up to 25 times the life of steel wheels.