The Metolius Greatest Hits: Bouldering Set features twelve randomly assorted micros, modulars, minis, macros, and roof holds for you to set whatever you want on your own home wall. Made with Fusion Resin, these bolt-on holds are strong and flexible so you can climb on them for many years, and the steel washers increase each hold's strength and durability. Metolius includes all the hardware you need to quickly set some problems and start sending.