It doesn't need to be screwed in, it fits perfectly. Simply with its geometry and fit, it doesn't slip out of place.
CRUZ Airo T Black 2 Bar Roof Rack for Seat Ibiza III/6L 3dr Hatch with
Car Cup Holder Air Vent Drink Coffee Bottle Rack Auto Interior Accessories For Seat Ibiza 6F 6L 6J 2011 2010 MK3 6K IV 2003 2023 - AliExpress
SEAT Accessories General Catalogue
Bike carrier for Seat Ibiza IV SC (6J1/6P5)
Gearboxes, Rack & Pinions for Seat Ibiza for sale
Seat Ibiza III (6L) Steering rack, 70.00 €
VW Polo 9N Seat Ibiza 6L Skoda Steering Rack Servo Gears 5Z1423051D
Steering Rack Boot SEAT Ibiza III Hatchback (6L) online catalogue: buy in original quality
For 3 normal bikes or 3 fat bikes- TÜV / GS approvedThe Menabo Viper bike carrier is designed for mounting on the tailgate of your Seat Ibiza (6L).
Bike carrier for tailgate Seat Ibiza (6L) 2002-2008 5-door hatchback Menabo Viper
Bike carrier for Seat Ibiza IV ST (6J5) - Paulchen System - Fahrradträger Manufaktur Hamburg
SEAT Ibiza 6J 5 Door Hatch Roof Bars