2B WOOD HUB JEWELERS POLISHING BRUSH PURE CHUNGKING BRISTLE BRUSHES 2 ROW6 Brushes Jewelers polishing brushes are made with quality stiff pure Chungking bristles securely mounted into hard maple hubs, remain fastened until completely worn down. The converging black bristles are angled on hub so that rows of brush tips come together to form a dense, tightly packed edge. The wooden hub has a 1/4" hole for screwing onto tapered threaded spindle of motor. SPECIFICATIONS: - Overall Diameter: 2-13/16" - 72mm - Hub Diameter 1-13/16" - 46mm - Trim Length: 1/2" - 13mm - Bristle Rows: 2 Rows - Converging Bristle - Arbor Hole: 1/4" Sale is for 6 Brushes NOTE: Visit JETSINC. ebay Store Listings, where you can see various Grades and Sizes of Bristle Brushes, Spindles, Arbors, Miniature Mandrels and Holders along with more Jewelers Equipment Tools and Supplies. JETS INC. E6 CKP 424