These tricky slopes are smooth except for the strategically placed textured spots. Easier on a slab wall, their preferred angle is dead vertical. If you mount these to an overhang, you are sure to sap the strength of your strongest climbers as they yearn to hold on. It's all about the contact strength with these. Carabineer not included -- shown for size reference only.Carabiner not included. Shown for size reference only.