Most camber bars you find are hollow tubing, no knurling, fixed drop arms, etc. They might look nice, but are not very user friendly. Ours features a well knurled rackable shaft made of chrome/alloy steel, needle bearing in the shaft. Sleeves are fixed. The sleeves are angled up a few degrees to prevent plate slide, even with no collars.
Simply put, you won't find a better camber bar anywhere.