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Black Diamond

Black Diamond Micro Stopper 4

Size Guide
Black Diamond Micro Stoppers Size Chart

Black Diamond Micro Stoppers

Number Colour Size - Depth x Long Edge (mm) Strength (kN) Weight (g)
1 Grey 3.7x5.1 2
2 Yellow 4.6x6.5 3 7
3 Green 5.1x7.5 5 10
4 Blue 5.9x8.4 6 13
5 White 7.4x9.4 6 15
6 Red 8.8x10.04 8 21


The Black Diamond Micro Stopper 4 is a mid sized wire in the micro nut range that offers versatile thin crack protection for free climbers and aid climbers.

Trapezoidal in shape, these micro climbing nuts have a subtle curve allowing for placements in almost parallel cracks, but can still work around crystals and other minor lumps, bumps and irregularities. Each Micro Stopper is equipped with a durable, galvanised steel cable.


  • Copper/iron mix in heads provides bite in thin placements
  • Patented swage is stronger, more flexible and less prone to fraying

*Sizes 1 and 2 are for direct aid climbing only


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