http://www.impexindustry.com/index.php?route=product/product&product_id=507 http://www.impexindustry.com/image/data/logo.png http://www.impexindustry.com/index.php?route=product/product&product_id=507 Impex Industry http://www.impexindustry.com/index.php?route=product/product&product_id=507 Fig. 2, 7 mm diameter]]>