This is one dart flight grooming tool you can’t be without! It improves accuracy, extends flight life and sharpens steel points. Flite-Rite™ is simple to use as you can see from these pictures. Just squeeze Flite-Rite™ ‘s patented square-edged groomer over the flight edge and pull. Check the edge and continue until it’s smooth. Works great for “robin hood” damage near the center too. Use the included Arkansas sharpening stone to sharpen points to reduce bounce-outs. You'll see the best results on foil/mylar type flights.