Consider this hold your Swiss Army hold. Use it like a mail slot and grip on the top or the sides. Hang it from one end and use a ring in the T-slot. Hang it from the other end and use an axe it the long slot.
 
HDPE (High Density Polyethylene)
High strength to density ratio
Extremely durable and strong
12" MFNS is 1 inch thick
 
Extend the life of your targets, holds and slots with HDPE. These holds are great for outdoor rigs. It's dense, durable and can survive high impact sends. The only hold that will survive an apocalypse.