RCK-SH Series cork plugs are designed to plug and mask plain holes. Recommended for painting applications, but may also be used to protect during plating, anodizing and blasting processes. Also good for protection during transportation. They can be used on plain and threaded bores. Recommended temperatures up to 300 degrees F (149 degrees C) Can be cut to desired length Reusable depending on application Material: Cork : : A: 1.718, B: 2.000, C: 1.500, QTY/BAG: 100.