UnderCover - Elite Hard One Piece Truck Bed Cover - 2014-2018 GMC Sierra & 2019 Limited 6.7ft Bed Std/Ext/Crew (2014 1500 Only, 2015-2019 1500,2500,3500) Black Textured - UC1148 Quad Simultaneous: Both sides flash

Quad Simultaneous: Both sides flash four times simultaneously in quick succession

Specifications Multi-function light modes with dimmability Easy grip handle Rechargeable 3

Even with such a lightweight design

The RetraxONE MX is manufactured from polycarbonate

It is based upon the same clamshell design as the DriveShaft series

UnderCover - Elite Hard One Piece Truck Bed Cover - 2014-2018 GMC Sierra & 2019 Limited 6.7ft Bed Std/Ext/Crew (2014 1500 Only, 2015-2019 1500,2500,3500) Black Textured - UC1148 Quad Simultaneous: Both sides flashQUICK CLICK PATENTED REMOVAL Remove quickly with integrated EZ OFF lift handles when you need to make room for moving oversized cargo. HAUL 21% MORE Full 100% bed access21% more than traditional retractableswith EZ OFF convenience when needed. DESIGNED FOR EASY STORAGE Store on integrated feet when not in use, in your garage, truck bed, or back seat. BEST IN CLASS CARGO PROTECTION Padded soft impact storage case and innovative spiral track system