2007-2017 Ford Expedition EL Roof Racks

What's the difference between Solid vs Click-In Crossbars?

SKU	Name	USD
8-00-7670-BK	EXR 'WEEKENDER-7670' Black Crossbars - (2) 40" Solid bars, 1.76" above Rails	472.31
8-00-7776-BK	EXR 'WEEKENDER-7776' Black Crossbars - (2) 51" Click-In bars, 1.76" above Rails	746.75
8-00-7671-BK	EXR 'CAMPER-7671' Black Crossbars - (3) 40" Solid bars, 1.76" above Rails	831.49
8-00-7776-RD	EXR 'WEEKENDER-7776' Red Crossbars - (2) 51" Click-In bars, 1.76" above Rails	856.67
8-00-7777-BK	EXR 'CAMPER-7777' Black Crossbars - (3) 51" Click-In bars, 1.76" above Rails	1079.17
8-00-7672-BK	EXR 'OVERLANDER-7672' Black Crossbars - (4) 40" Solid bars, 1.76" above Rails	1119.07
8-00-7777-RD	EXR 'CAMPER-7777' Red Crossbars - (3) 51" Click-In bars, 1.76" above Rails	1244.05
8-00-7778-BK	EXR 'OVERLANDER-7778' Black Crossbars - (4) 51" Click-In bars, 1.76" above Rails	1449.31
8-00-7778-RD	EXR 'OVERLANDER-7778' Red Crossbars - (4) 51" Click-In bars, 1.76" above Rails	1669.15