SKYSKI - 3 Piece Reversible Shim Set

3-Pc Plastic Shim Set; (1) .25 degree shim; (1) .50 degree shim; (1) 1.0 degree shim. Shims are slotted, so they can be slid forward or back to fit any rear wing. Shim are also reversible, so they can be used to increase or decrease lift.