There is nothing like the Alien X from Fixe Hardware. They are 20% lighter than standard Aliens, with improved components and a narrower head width for tight placements. Milled heads for improved grip. These amazing cams are great for aid and free climbing alike; and are perfect for pin scars and thin cracks. They feature stems that are very flexible in all axes, along with narrow head widths and soft alloy cams with a large camming angle and a very innovative trigger design that works beautifully as well as very durable. A tried and true design.
When Dave Waggoner introduced his Alien cams to climbing, the art of technical placements changed. Alien cams are the best thin crack protection. The Alien X units excel in pin scars and technical placements. Dave's design has been and will be copied in the future but so far this original concept stands alone.