will all of these needles fit a Singer featherweight 221?

I do not have a Singer featherweight 221. I was taught that a needle will fit in any machine if the flat side of the top of the needle fits to the back of the machine. I have found this to be true for the last 40 years if the eye of the needle is to be thread front to back. I have not met a Singer machine that does not thread front to back and that does not have the flat side of the top of the needle set in place to the back side of the machine.

Will this work for Babylock Presto ll

These are the industry standard needles. They will work.

will these needles fit the Brother CS600i?

I think they will. The package says the needles fit all bands of sewing machines. My sewing machine is from 1969 and I was glad to get them at Amazon. I took a tailoring class at the local college so I knew what needles to buy and I believe these will fit your machine. They are about 1 1/2 inches long, from top to bottom, and are flat on one side where they hit the shank so you can't put them in wrong. I hope this helps! I buy all my sewing aids at amazon and never pay shipping when I could avoid it.

Compatible Material	Fabric
Compatible Devices	Domestic Sewing Machine
Unit Count	8.0 Count

Regular & Ball Point Machine Needles

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