Decorative brass center-crimp tubes with hook. Approximately 12x13mm overall, 2.8mm inner diameter. These items are lead free and meet the EU Nickel Directive. JBB Findings is internationally known as a manufacturer of quality jewelry findings & supplies. Will accommodate beading chain or cord up to 2.8mm. Crimp (flatten) only the center section of the tubes, leaving the ends intact. Size and shape will vary +/- 10%.