Gearing up for The Nose? Giving it a go at the Shield? Make sure you rack up with the Petzl Owall Carabiner. Its oval shape prevents dreaded biner shift when youre aiding on sketchy RP placements, and the snag-free Keylock gate allows you to un-clip your previous hook placement without bumping it off the ledge. The Owall Carabiner is also an excellent choice for racking your nuts, pitons, or hooks.
The best oval for racking, period. Keylock eliminates all those snags. Only buy as many as you need to rack though - for bail 'biners, aiders, or other oval applications, get cheaper BD or Omega ovals.