EXR JEEP WRANGLER JK (2 door) and JKU (4 door) SOLID MID CROSSBAR (No Square holes) - Comes with 2 threaded holes on the bottom that allow this bar to be installed on Jeep JK (2 door) and JKU (4 door) factory roll bars and usable when Factory soft top is down / removed. No Drilling. Once installed, soft top closes perfectly over crossbar bar with no interference. Installs with Jeeps two Hand bolts (often comes with Jeep, but available separately if needed: 8-00-9902). Bar also fits on top of the HARD TOP with the addition of (1) of 8-00-9790 Hard Top brackets (1 pair in box fits 1 bar). This Solid Crossbar accepts most other mfg roof top accessories. It does not accept EXR Click-In accessories. Upgrade to 8-00-9702-BK (or RD) to use EXR click-in accessories. Crossbars are made from heavy duty carbon steel, acid washed, electroplated and powder-coated for maximum durability.