Black Diamond Oz Screwgate Carabiner vs Unknown Phantom Carabiner
Weight and specs compared for 2026 — and which one to choose.
Ultralight screwgate carabiner for via ferrata.
Lightweight climbing carabiner at 1oz. Full UIAA certified.
Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.
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Black Diamond Oz Screwgate Carabiner vs Unknown Phantom Carabiner: which should you buy?
If saving weight is your priority, the Unknown Phantom Carabiner wins — at 28 g it is 4 g (13%) lighter than the Black Diamond Oz Screwgate Carabiner (32 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest safety page, or browse the full gear weight database.