USP Structural Connectors PC716 Steel Plywood Clips, .4375-Inch

What can I say? They're the right size, they stay put during installation. Very consistent. I used these on the roof of my shop, and also ended up using them on the OSB wall sheathing to maintain 1/8" gaps between sheets. An added benefit for the wall sheathing is, when working alone, I could use just one of these clips on each end of the sheet, then set one end into the clip, and it would hold it securely enough that the sheet wouldn't slip off of the one below. Then, all I had to worry about was sliding it (made it easy to slide end to end, also) to get it lined up on the studs. Overall, good product, worked well.