Billet Aluminum Shifter Ball - 3/8"-16 thread - 2" Diameter NEW design for even better heat insulation. Don't burn your hand late in the race Extra holes are drilled and the 2" ball is mounted with a stainless steel bolt (SS transfers heat poorly). Cooler shifting NO INSERT to come out - ball won't come off in your hand during the race One piece CNC machined billet aluminum Specifications Material CNC machined billet aluminum Finish Black anodized Thread size 3/8"-16 Diameter 2"