Stronger for a long period of use: our hand retractable spring plunger uses quality metal to make, stable and not easy to break, safe and reliable, stronger for a long period of use Small in size and light in weight: the plunger spring is 1/4 inch - 20 thread size, 0.500 inch thread length, small in size and light in weight, so you can carry it out anywhere, store it anywhere you need without much burden or space, also it will integrate into your toolbox completely without any conflict Improve your work efficiency: no threading or tapping required, it only takes a few minutes to install these boat quick release pins, saving time and effort, greatly improving your work efficiency Widely applicable tool: Can be applied in rolling toolbox, mould, chassis, cabin, electrical appliances, industrial equipment, automotive and more, also they can replace and change the key ring pin, which will be more elegant and firmer Material:Metal colour:Silver Package Contents: 6 * Hand retractable spring plunger