Most sizes of ALIENS are narrower than other 4-cam units! Patented internal spring construction allows placements where even most 3-cam units won't fit - like in pin scars, pockets and mini-huecos. Flexible single cable permits ALIENS to be slotted deeper and "walk" less than other camming devices. Reach for a SUPER LONG with an additional 3/4" reach - for sinking deeper placements and better security. ALIENS rack well and are famously easy to place. Each Alien cam is UIAA tested and CE approved. Be sure to place your ALIENS (and all cams) at 50% closure - for maximum holding strength. Shipping now.