Blue Bowl 4" Black Classifier Lid for Stackable Gold Panning Sifters

Complete your Blue Bowl stackable classifier system with this essential 4-inch black lid designed for secure, efficient gold panning and material separation. Perfect seal prevents material spillage during vigorous shaking and classification Durable black construction withstands repeated field use and harsh conditions Precision 4-inch diameter fits Blue Bowl stackable classifier screens perfectly Lightweight design won't add bulk to your prospecting kit Essential component for multi-stage material separation and grading This classifier lid transforms your stackable screen system into a complete, self-contained classification unit. Whether you're processing black sand concentrates, separating different material sizes, or grading your dig site material, the secure lid ensures nothing escapes during the shaking process. The round 4-inch design creates an airtight seal that allows for aggressive agitation without losing precious materials. Perfect for both beginner and experienced pros