http://www.impexindustry.com/index.php?route=product/product&product_id=515 http://www.impexindustry.com/image/data/logo.png http://www.impexindustry.com/index.php?route=product/product&product_id=515 Impex Industry http://www.impexindustry.com/index.php?route=product/product&product_id=515 Fig. 1. 4.5 mm diamete]]>