The listing, Vintage Boye Needlemaster Interchangeable circular Needle Set has ended.
This is a Vintage Boye Needlemaster from Sears. I got it off Listia hoping it would be compatible with my needlemaster so I would have extra parts, but the screws are larger on the cords. So my loss is your gain! It was purchased at a thrift store and is missing pieces. It has five cords of varying lengths, 2 size 15 needles, 2 size 13, 2 size 11, 2 size 10 1/2, 2 size 10, 2 size 9, 2 size 8, 2 size 7, and 1 size 6.