Masking Cap For M20 Screws, ID 19.1mm x OD 22.1mm, 88mm Long, Silicone (Milky White), Pack of 1, HLAS191-2-P
SGD $4.40
The most basic masking cap, our GA series is cylindrical and able to protect the most commonly used screw hole diameters. In addition, there is a wide range of sizes to mask even holes with odd sizes.