http://www.impexindustry.com/index.php?route=product/product&product_id=516 http://www.impexindustry.com/image/data/logo.png http://www.impexindustry.com/index.php?route=product/product&product_id=516 Impex Industry http://www.impexindustry.com/index.php?route=product/product&product_id=516 Fig. 2. 5.5 mm diameter]]>