I have a couple of these and over the years they have come in handy on numerous occasions.Team the spinner handle up with a 1/4 inch thumbwheel ratchet or your favorite 1/4 inch drive ratchet and your existing 1/4 inch drive sockets and you'll have a versatile nut driver set up that will not take up much space in your box. The additional extensions will allow you pick your length and stack them to reach that nut or bolt. Need just a little more torque? Insert your 1/4 inch drive Flex Handle AKA Breaker Bar or BLB (Break Loose Bar). This item is a must have addition to your 1/4 inch drive set.