Seriously, there's a lot of metal there for something which is claimed to weigh 70g/pr. I suspect something got lost in translation and they are really 70g each. The SRAM ones are all fibre reinforced plastic, which is less than half the density of aluminium. The Vision ones are tiny and have no expander, which is why they are light but only work with Vision bars by clamping onto the OD, not plugging into the ID, and only work with special Vision cables which have miniature nipples.
Seriously, there's a lot of metal there for something which is claimed to weigh 70g/pr. I suspect something got lost in translation and they are really 70g each. The SRAM ones are all fibre reinforced plastic, which is less than half the density of aluminium. The Vision ones are tiny and have no expander, which is why they are light but only work with Vision bars by clamping onto the OD, not plugging into the ID, and only work with special Vision cables which have miniature nipples.