For all those younger than baby boomers, a 45 rpm adapter (also referred to as a 45 RPM record insert, or 45 RPM spindle adaptor) is a small plastic insert that goes in the middle of a 45 RPM record so it will play on a turntable. The 45 adaptor is a small solid circular piece that fits onto the spindle or a larger adapter that fits over the entire spindle, permitting a stack of 45s to be played.
This 45 RPM Jewelry Necklace includes an adjustable black waxed cord (16" to 26")