This set of 10 screw-on jugs have a comfortable usable surface designed for maximum comfort on any angle wall. The screw-on nature of these holds means no more looking for the perfect t-nut placement. Now you have all the power to install them right where you want them, every single time.
Using general construction screws, drywall screws, or any non-structural screw can be dangerous when installing climbing holds.
GRK #9 screws have a structural rating (#8 GRK do not) and are the only screws we recommend for installing climbing holds. Safely installing holds is important with precious hands pulling pulling on these plastic grips.