This set attaches with wood screws. If you prefer a bolt on hold that uses a bolt and a t-nut, try our 24 Kids Climbing Holds Wall Pack - Bolt ons.
Set #1 offers the 10 XL Simple Screw On Jugs instead of the 10 Large Simple Screw On Jugs that Set #2 has. The difference between these 2 sets are size. If you have a toddler or simply want a hold that 2 hands can fit on, choose this set which is Set #1.
This collection of holds is designed to meet the needs of preschoolers and up – easy for them to hold on to yet versatile enough to challenge them as they grow. Offering grips designed for their little hands to fit and giving them the confidence they need to ascend. This set helps build an encouraging climbing environment for kids while holding their attention as long as possible.
There is a photo example above of exactly where to place the holds. Look for the thumbnail images to the right of the main image.
If you plan to lay a sheet of plywood right against drywall, simply attach the 3/4 inch plywood through the drywall to the studs and then you can attach the holds anywhere on the plywood. This method of plywood attachment is acceptable because the holds in this set are SCREW ONS and attach with multiple wood screws per hold. You can attach these holds directly to concrete as well using concrete Tapcon screws which are available as an option.
See How to Build a Wall for complete instructions.