The Genuine Fanatec table clamp is awful. Three M6 screws the thickness of your desk plus 10-15mm (so for a 30mm thick desk you would need a 40-45mm screw).
Fanatec CSL DD. GT DD Pro Shaft Clamp. Runout disconnection fix. QR1 or QR2
Strong 15' Tilt Mount for Fanatec CSL DD, DD PRO, DD+, PODIUM DD
8Nm Boost Kit 180W Power Supply For Fanatec CSL DD GT DD Pro UK Plug
QR2 Base Side Type C for Fanatec CSL DD & GT DD Pro Wheelbase *BRAND NEW*
UK FANATEC CSL DD AND GT DD PRO BOOST KIT 180 POWER SUPPLY 8NM 24V 7.5A
Fanatec CSL DD GT DD PRO Wheel Tilt Table Mount Adapter V2 Playseat