1/10 Impulse Aluminum Front/Rear 1.9 12mm Rock Crawler WheeOverview This is a pair of Impulse 1. 9" Aluminum Composite Internal Bead Loc Wheels. Pro Line is proud to introduce our Impulse 1. 9" Aluminum Internal Bead Loc Wheels! These Impulse wheels are designed to not only look scale with the split 6 spoke design, but to be super easy to use by only requiring 6 screws per wheel for mounting tires. The face of the Impulse has been CNC machined to exacting tolerances and precision finishes that are second to