THE 4 IN 1 LUG NUT FLIP SOCKET PROVIDES 4 MOS T COMMONLY USED SIZES FOR LUG NUTS IN ONE SINGLE SOCKET .
THE INNOVATED DESIGN ALLOWS USER TO USE TWO SIZES ON EACH END .
WHEN WORKING WITH A 17MM NUT , YOU CAN FIT THE NUT TO THE INNER HEX . WHILE USING
WITH 21MM NUTS , THE SPRING INSIDE THE SOCKET ALLOW YOU TO PUSH IN THE INNER PART AND FIT THE NUT TO THE OUTER SPLINE SOCKET .
IT IS CONVENIENT TO CARRY I N CAR FOR EMERGENCY USE WITH OUT TAKING MUCH SPACE .