Decorative antique brass center-crimp tubes with hook. Approximately 12x15mm overall, 3.8mm inner diameter. Lead free and meets the EU Nickel Directive. JBB Findings is internationally known as a manufacturer of quality jewelry components & supplies. Will accommodate beading chain or cord up to 3.8mm. Crimp (flatten) only the center section of the tubes, leaving the ends intact. Size and shape will vary +/- 10%.