Racing Optics tearoffs are this tinted tearoff solution for dirt and pavement forms of racing. This XStack includes 3 single layers of 4mm dark smoke tearoffs. Each package contains 3 stacks of 1 tearoff for a total of 3 tearoffs. This is a single-layer smoke lens used under your stack of clear that are bought separately. Compatible with the RS7C LTWT, RS7SC LTWT, RS7 Carbon, RS7 Pro, RS7-K, HP7, KC7-CMR Carbon, and KC7-CMR.