Brand: Wheel Fit Manufacturer's Part Number: 10072450 Part Type: Wheel and Tire Simulator Tools Product Line: Wheel Fit Professional 45 Wheel Fitment Tool Kits Summit Racing Part Number: WWK-10072450 UPC: 725410697281 Quantity: Sold as a kit. Wheel Fit Professional 45 Wheel Fitment Tool Kits Determine the best wheel and tire size combo before you make your big purchase! Wheel Fit Professional 45 wheel fitment tool kits include the diagnostic equipment for most 4- and 5-lug vehicles， including bolt circles ranging from 100mm up to 5 x 5.50 in. These faceplate tools and extensions will measure from 14 to 20 in. tire bead diameter―and also from 6.5 in. to 16 in. width. The backside setting is completely adjustable， with a ruler mark engraved on the side to indicate backside setting and width measurements. The name says it all: Wheel Fit.