DISC-0250, Green Polyester Masking Disc with slit back liner, .250″ diameter, 6.4 mm diameter, 5,000 discs per roll – CLINCH NORTHWEST
3M Circles, 2380 Masking Tape Discs, 0.125" Diameter, roll of 2500: Amazon.com: Tools & Home Improvement
Green Masking Discs, 1/4 Inch Diameter, Polyester Film with Silicone Adhesive, General Purpose Masking (2,000 Discs/Roll), RoHS and REACH Compliant: Amazon.com: Tools & Home Improvement