Incision Aluminum Wheel Hubs. These #2 hubs are narrower than the stock #4 hub, and will reduce the track width by 10.2mm. Features: Compatible with Incision wheels* (NOT COMPATIBLE WITH VANQUISH SLW SYSTEM) Sold in pairs Increments of .100 of an inch Uses six 2-56 screws to attach hub to wheels Hardware not included Patent No. 8,167,380 B2 Hub Offset Track Width Change** #2 0.225" -0.40"/-10.2mm #3 0.325" -0.20"/-5.1mm #4 0.425" Included with wheel #5 0.525" +0.20"/+5.1mm #6 0.625" +0.40"/+10.2mm #7 0.725" +0.60"/+15.2mm #8 0.825" +0.80"/+20.3mm **Total Width Change when installed on vehicle compared to #4 Hub included with wheels