These holds are made for use with set screws which should be #8 countersunk wood screws.
These are high quality, high strength climbing holds made from polyurethane. The texture is high quality and comfortable with plenty of friction!
If you have any questions about the holds or need something more specific please contact us and we'll do our best to help you out.
We're always working on new designs so check back frequently to see our new climbing holds!