Black Diamond Knife Blade #1, Bakaboo #3-6, 5 pieces total

These Black Diamond pitons are distinguished by their size numbers.

Knife Blade #1, #2 Thin (approx. 3.2mm)
For thin, shallow cracks
Bugaboo #3-#6 Thick (approx. 4mm and up)
For wider, solid cracks

Knife Blade:
Features a very thin blade, ideal for placement in micro cracks as fine as a hair.
Lightweight and compact, it allows for secure anchor building while minimizing damage to the rock.

Bugaboo:
Has a thicker blade than the Knife Blade, suitable for securely lodging into cracks with some width or pocket-like features.
More versatile, it can handle various rock types and crack conditions.

Both are traditional climbing gear made of chromoly steel, playing a crucial role in ensuring the safety of climbing routes.