The topeak alien xs multi tool is a light weight and compact version of the standard topeak alien multi tool it has 16 essential tools for mtb trail riding including allen wrenches box wrenches philips and flat screwdrivers spoke wrenches stainless knife and bottle opener the whole tool weighs in at around 170g so it is great for keeping in your pocket or in your saddle bag for riders who prefer not to carry a big day pack this multi tool is made from high grade stainless steel so