http://www.impexindustry.com/index.php?route=product/product&product_id=513 http://www.impexindustry.com/image/data/logo.png http://www.impexindustry.com/index.php?route=product/product&product_id=513 Impex Industry http://www.impexindustry.com/index.php?route=product/product&product_id=513 Fig. 1, 4.5 mm diameter]]>