16 LED 18" Emergency Amber Strobe Light Bar for Vehicles - High Visibility Warning Traffic Safety Light - Perfect for Trucks, Police Cars, Construction Vehicles & Roadside Emergencies

Suction not very good. No suction cups supplied with product. Brightness is good. Still would recommend product for buyersThis review comes with a caveat; the lights were $20 apiece. That's cheap. Chinese-made to no-demanding-specifications kind of cheap.I like the lights for what I paid, but retain no doubt, these aren't anything close to Whelen or Feniex.I got 2 of these and put them across my back window with a gap in the middle. First thing I did was to cut off the magnificently shoddy cigarrete-lighter-plugs and connected them to the car with an add-a-fuse. Those plug tips looked like they'd fall apart if I so much as looked at them.I'm also using my own power/pattern switches, dug them out of the odds 'n ends bucket in my garage. The button box it comes with is big, ugly, and cheap looking.Other than that, the quality is fair. I've been using them off and on (haha) for several months now and haven't had any dimming or burned out LEDs. I was hesitant when first buying them because there were no reviews but the lights have given me no trouble and work as well as I expect them to.I'll update this review in a while if I remember to or if I start having any trouble with the lights.Love itWorks great!Looks great on Semi truckBright and works great for the priceVery good ?Didn’t come with suction cups ?