Black Diamond

Stopper Set Pro #1-13

What Our Gearhead® Experts Are Saying:

"Stoppers are stoppers until they're not — and the difference shows up when a placement gets fiddly, or a nut won't release after a fall. The transverse taper on these seats well in constrictions and flares that a straight nut would skate right past, and the rounded edges make cleaning genuinely easier. Color coding helps you grab the right size on the lead without squinting at wire labels. If you're building a trad rack from scratch, starting with the full #1–13 set means you're not guessing at gaps."

Who It's For

Trad climbers building or completing a rack who want a full range of passive protection

This set is aimed at trad climbers at any experience level who want a complete, color-coded nut selection in one purchase — from beginners assembling their first rack to experienced climbers replacing worn pieces or rounding out an existing collection. Nuts reward climbers who take the time to read crack features carefully, so newer trad climbers should expect a learning curve on placement quality. The full 13-piece range makes this a practical starting point for anyone moving into crack climbing.

What It's For

Passive protection in cracks, constrictions, and flared features on trad routes

Stoppers are the foundation of passive protection — no moving parts, no maintenance, just a piece of aluminum seated in a constriction. The Stopper Set Pro covers sizes #1 through #13, spanning thin finger cracks up through wider crack features. The transverse taper geometry gives each nut two distinct contact profiles, which expands the range of placements each piece can seat in, including flares and irregular constrictions where a single-profile nut would fail to bite.

Why We Like It

Full-size range, versatile taper geometry, and rounded edges that actually clean

The transverse taper is the real story here: each stopper is shaped so that one axis is narrower and one is wider, giving you two distinct seating options per piece and meaningful overlap between adjacent sizes. That matters when you're standing on a small ledge trying to find pro in an imperfect crack. The rounded edges reduce the chance of a nut walking deeper into a placement under load, which keeps cleaning manageable even after a weighted fall. Color coding runs consistently across the set, so you can pull the right size by sight on lead. The included OvalWire carabiner clips the full set onto your harness as a single organized unit until you rack pieces individually.