All-purpose JARKE Quiktree Cantilever Racks store uniformly distributed loads up to 500 lbs. on each arm. Arms adjust on 1-1/2" centers and tilt up at approximately 5°. Arm end cap mounts up 2" or flush. To form storage rows, begin with starter column, join any number of add-ons to complete row, and finish with starter column. Starters include (2) columns; add-ons include (1) column. Capacity does not include base.