The Q-Series PRO is one of RIGID?s most durable lights. It is a combination of 4 D-Series optics in one large sturdy housing, and includes a vibration isolator and 304 stainless bracket. Recent enhancements in LED technology deliver more raw lumens than ever before with the Q-Series PRO. The Q-Series PRO has recently benefited from several upgrades to improve both the look and performance. Plus, new branding and new blacked-out circuit boards give the Q-Series PRO a more refined look. For use in a heavy duty commercial environment for Agriculture, Fire and Rescue, Commercial truck, Marine, Off-Road and Power Sports. Q-Series PRO covers also include a 50% forward projecting and 50% area light option to project the light where and how you really need it. Designed specifically to function in any environment and withstand any abuse. These LED Lights are big, bright, and heavy duty!