When removing calipers or flexible brake lines, either the end of the flex line or the end of the hard line needs plugging.
Being a golfer, I always have golf tees handy and have used those. But they really are too big, so always have to sand them down. I am about do do this, so thinking about a better way. Any good ideas? Maybe look in wife's sewing supplies?? Plastic knitting needles? Rubber plugs would be best.
Picture borrowed from site we can't mention
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Graham
85 300D

,72 350SL, 98 E320, Outback 2.5