Body-Solid
Body-Solid Olympic Barbell Adapter Weight Sleeve (OA8), Converts 1" Standard Plate Posts to 2" Olympic, Includes Hex Bolt Lock-Down, 8 inch Long
LAVVON
Olympic Adapter Sleeve (2 PCS), Converts 1" Standard Weight Plate Posts to 2" Olympic Weight Plate Posts, Suitable for 1" Standard Barbell Bars, Heavy Duty Nylon and Removable end Cap (2 Pcs)
Rexhubro
Rexhubro Olympic Adapter Sleeve 8"(2 PCS),Converts 1" Standard Weight Plate Posts to 2" Olympic Weight Plate Posts,Heavy Duty Nylon and Removable end Cap (8 inch)
Yes4All
Yes4All LAT Pulley System with Plate Loading Pin & Pull Down Tricep Rope – Ultimate Cable Pulley Attachments for Standard & Olympic Weight Plates