Rockin Beads Brand, 100 Complete Antiqued Silver Pewter Toggle Clasps Small Loop Jewelry Findings 100, 2 part toggle clasps Antiqued Silver Pewter Loop Measures 10x13mm Thats About 3/8 x 1/2 Inch Bar Measures 17mm x 5mm Thats about 5/8 x 1/4 Inch Inside of loop is approx. 8mm Rockin Beads (TM) Brand comes with Rockin Beads Size Gauge Card