2) 12 1/2 X 11 1/2 inch Black Plastic cable reel wire spool holds 500 4 AWG | eBay
Carris Reels Products - Plastic Reels - Carris Reels, Inc.
Steel and Plastic Reels - New American Reel Company
Plastic Spools
Plastic Spools - P&R Specialty
Plastic Spool Manufacturers | Plastic Spools For Aluminum Wire | Plastic Spools For Copper Wire | Plastic Spools For Super Enamelled Copper Wire | India