The Chris King PressFit Adapter is designed to allow the use of a 24mm crank on a PressFit 30 Bottom Bracket. Many Shimano, FSA or Sram Cranks use a 24mm Spindle.
Chris King Press Fit 30 Steel Bottom Bracket Silver
Chris King Press Fit 24 Steel Bottom Bracket Silver
Chris King Thread Fit 24 GXP Bottom Bracket Silver - one size
Peaty's x Chris King Tubeless Valves MK2 42mm
Chris King Twin Gen 3 Freewheel Body Conversion Kit without Axle Shimano Microspline, PHB833B