Bead cap, TierraCast®, antique silver-plated pewter (tin-based alloy), 3.5x2mm scalloped round, fits 2-4mm bead. Sold per pkg of 10. - Fire Mountain Gems and Beads
Bead Caps for Beginners
4mm Hole is 1mm Metal Round Shape Beads Caps Wholesale Approx 1000Pcs Filigree Spacer Bead Caps For Jewelry Making End Caps B437|spacer beads|round shapeshaped beads - AliExpress
STERLING SILVER PLAIN ROUND BEAD CAP SPACER BEAD ~~ Many Size ~ 4mm / 6mm / 8mm | eBay
China Factory Tibetan Style Alloy Bead Caps, Lead Free and Cadmium Free, Antique Silver, about 12.5mm long, 12.5mm wide, 4mm thick, hole: 1.5mm. Cadmium Free & Lead Free, 12.5x12.5x4mm in bulk online -