Medium Jugs - The practical climbing hold set from Entre-Prises. An 11-piece climbing hold set for your climbing wall! The polyester holds are clear and dry, and thanks to the EPS (Explosion Proof System), the holds are virtually unbreakable. Each hold contains a special wire designed to prevent breaking or chipping. For mounting on wooden panels (with some space behind the panel), in addition to T-nuts, you will also need: 8 pieces of M10x50 hold screws and 8 pieces of 5x40 wood screws (optional). Screws and nuts are not included!.