ABC Luxury Aluminum Metal Hippocampal Buckle Bumper Cover For Huawei Nexus 6P (Black) Material: Aluminum metal; CNC machined from a solid block of aircraft grade aluminum; Made of aviation aluminum alloy, light, wear-resistant and non-fading; No screws,Innovative seahorse-buckle design, easy to install and remove; With EVA cushion foam inside, shockproof and more nicely fit;