Folding Measuring Wheel w/Backpack Case, Trigger Brake & Reset Keson RRT12Keson RRT 12 Professional Measuring Wheel Folding Trigger Brake With Case This is a full featured measuring wheel and includes a backpack style nylon zip up carry bag case. Features 12" spoked wheel Folding Handle with pistol style hand grip Wrist lanyard on end of handle Trigger brake (Helps stop wheel from turning when you stop, when you finish measuring, or when you go over a curb or turn) Counter Reset on both the counter odometer and on the thumb