2007-2018 Jeep Wrangler JK 2Dr Hard Top Roof Racks

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

SKU	Name	USD
8-00-9605-BK	9605 BLACK NO DRILL Roof Racks 2007-2018 Jeep Wrangler JK/JKU (2-4dr) Hard Top	477.18
8-00-9607-BK	9607 BLACK NO DRILL Roof Racks 2007-2018 Jeep Wrangler JKU (2dr) Hard Top	664.83
8-00-9705-BK	9705 BLACK NO DRILL CLICK-IN Roof Racks Jeep Wrangler JKU (4dr) Hard Top	698.86
8-00-9705-RD	9705 RED NO DRILL CLICK-IN Roof Racks Jeep Wrangler JKU (4dr) Hard Top	760.68
8-00-9707-BK	9707 BLACK NO DRILL CLICK-IN Roof Racks Jeep Wrangler JK (2dr) Hard Top	864.85
8-00-9707-RD	9707 RED NO DRILL CLICK-IN Roof Racks 2007-2018 Jeep Wrangler JK (2dr) Hard Top	998.29