DMM Peenuts are an ideal solution for effectively dealing with small flared placements. Peenuts come into their own on granite and slate, and are a must-have on your rack if you climb on a lot of quarried rock.
In terms of design the Peenut is offset and tapered. They have a bigger surface area than the brass micro nuts, allowing for more contact with the rock. It follows that the load spreads further as you take a fall, reducing the chance of breaking the rock.
Climbing quarried rock with flared peg scars? Get you some Peenuts.