Metolius 50 Hold Mega Pack Spring 2009 Take the mystery out of buying climbing holds with a Mega Pack by Metolius. Its like a climbing wall in a box. All you need to add is the frame and plywood Hugely popular, each Mega Pack includes a sampling of everything from Screw-On Hand and Foot Holds to Micros, Modulars Mini Jugs, to Macros, Roof Jugs Screw-on Corners see below. Plus you get all the mounting hardware, a Multi-Wrench and our in.How to Build a Home Bouldering Wallin. Booklet. The Mega Packs are a random mix chosen from all of our 7 hold lines combined. 5 Screw-On Footholds 5 Screw-On Handholds 1 Screw-On Rail 1 Screw-On Plate 1 Screw-On Outside Corner 5 Screw-On Modulars 12 Micros 10 Modulars 5 Mini Jugs 5 Macros/Roof Jugs Multi-Wrench in.How to Build a Home Wall Bookletin.