This is a bag of 100 colored rubber nipples.
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i don't know what size arm bar these are made for but they don't do crap with a needle on them. they are paper thin and hold nothing. what ever size arm bar that these work with most likely doesn't need a grommet at all.don't waist your money
REPLY: I am sorry that the nipples did not work out for you. Some of the colors are definitely on the soft side. There was no name with the review or we would have contacted you to try and make it right.