I bought this product and received it on time, all instructions are clear. If you have hands and can replace your own brakes and rotors, this item is PERFECT. I recommend if you don't know how to change brakes and rotors yourself. Ask your mechanic if they can purchase this unit and install it for you. Don't let them use crappy parts cheaply and extort more money from you just so you can pay them more for the job. All four replacements should take 3 to 4 hours, with a maximum of 5 hours. Don't rush to install it. You need to make sure everything is in order and place the rotors in the places marked on them. Pay attention. Great product and the drive is amazing. Much better than the OEM on my 2017 RAM 1500 Limited. The brakes and tires are very different. You take care. These are the best brake pads in my opinion. STOP on DIME! with precision and confidence.