Whyte Carbon Universal Joint
These are screwed into the Spartan shafts to adapt to your cue's butt section.
Pins: 3/8 x 10, 5/16 x 14, 5/16 x 18 (fits Viking), 3/8 x 14 (Cuetec), Radial & Uniloc
Tags: Spartan, SPRV2W, Carbon, Fiber, Shaft, 12.25, mm, White, Ferrule