These climbing wall holds are sturdy, robust and pretty easy to assemble. With bright colors and sturdiness of the handles Attach them to play wood and then attach the plywood to a wall in your basement or add on to a rebuilt playhouse,you can also put inside the turret of the wooden castle for kids,indoor and outdoor playground,etc.The kids will love them and they're different enough that you can turn them in different directions and get all kinds of grip combinations. The bolts can be installed with a hex wrench but if you have an impact driver with the correct size hex bit it's much simple.It can hold weight as an adult without budging.