Yamaha L3C Bolt On Keyboard Stand
From Yamaha
List Price: $39.95
Price: $34.95
Ships from and sold by American Musical Supply
Average customer review: 
Customer Reviews
Very Sturdy Keyboard Stand
I am very pleased with this keyboard stand. It is extremely sturdy. The only disappointment I had was that the description stated that the keyboard stand was “collapsible.” I assumed that meant that when it was mounted on the keyboard, it would fold for travel. Unfortunately, that is not the case. The stand must be unbolted each time, then it will collapse for travel. This is not very convenient.
Works with YPT-310
This stand works perfectly with the Yamaha YPT-310. The unit assembled easily and is sturdy. The total height of the stand / keyboard is a bit tall compared to my 88-note Yamaha keyboard / stand (about an inch taller).
YPT-300 confirmation
This review confirms that the LC3 works perfectly with the Yamaha YPT300. The unit goes together very easily. If you choose to use the bolt retaining rings, a flat blade screwdriver probably works better than the pliers that were suggested. (Make sure you put the bolts through the holes in the stand before putting on the retaining rings.)