Ornament Holder holds up to 4 bulbs at a time. compatible with at least 3 different bulbs, the round Dollar Tree bulbs, the round Michaels bulbs, and the M&M shaped Michael's bulbs. I'm sure they'll fit more than just those though. Comes with adapter and 4 clips. To know what size your turner arm is measure from outside edge to outside edge. If it measures about 3/4 of an inch, then you need the 1/2-inch kit. If it measures a little over an inch, then you need the 3/4-inch kit. The Deno's kits are for specialty turners. ***Does NOT include ornaments*** Random assorted colors.