Amazon.com: (10 Pack) TEN Yellow Plastic 45 RPM 7 Inch Vinyl Record Adaptor - 7" Inserts : Electronics
Amazon.com: 45 RPM Adapter Solid Aluminum for Most Vinyl Record Turntables 2.2oz Replaces Standard 7” Singles Adaptor. for Serious Audiophiles That Want to get The Best Sound Out of Their Collection : Electronics
5 Pcs 45rpm Vinyl Record Centre-hole Adapters Converter 7" Single Spindle Spiders Turntable Phonograph Accessories - Turntables - AliExpress
Remember 45 rpm record inserts? See a bunch of those little spindle adapters for old singles - Click Americana
45 RPM Vinyl Single Record Adapter (pack of 6/20) Classic Round Sticker | Zazzle