We have all been there. Two guys struggling with a tailgate spreader, you get it in the hitch, then one guy is on his knees while the other is moving the spreader trying to get the pin hole lined up. This new product solves that problem once and for all. Slip the STOP-IT on the post of the spreader all the way, slide the spreader into the receiver hitch, line up the pin hole, and put the pin in. Slide the STOP-IT forward until it hits the receiver, and tighten the stainless bolt. That's it. Next time you need to mount the spreader, just slide it into the receiver until it stops, and the pin hole will be lined up EVERY time. If you have to mount your spreader alone, the STOP-IT makes it so much easier. Works with any 2" hitch accessory that is long enough for the STOP-IT to fit when the pin is in the accessory. The bolt and welded nut are BOTH Stainless Steel. You will likely have to wire wheel off any rust on the post, and STOP-IT will not fit "perfectly" square receiver accessories. The square must have rounded corners like the inside of STOP-IT. Scroll through the images.