Silverhill Tools ATKYB Triwing Bit Set, 8 bits, Sizes Y000 - Y5
These unusual fittings turn up everywhere from cell phones to ski boots.  Silverhill Tools gives you 8 sizes in one set.  Please note that the sizes represented in this bit set are relative to each other and may not correlate to other 2 triwing sizing standards that exist on the market.  Some sizes have been redesignated to provide naming consistency within the set.