This is a Birchwood Casey Patch known as the Cleaning Patches, model BC-41168.
Since 1948" serious shooters" avid collectors and professional gunsmiths have relied on Birchwood Casey for shooting and gun care products that have stood the test of time. Birchwood Casey has pioneered innovative products with an unwavering dedication for quality.
Features:
Durable Cross Weave Pattern
Lint-Free
Highly Absorbent Material