1st The quality of the tracks are outstanding. I am a paving contractor, I use the block pattern on a Bobcat t66. We ride over asphalt every day. I average 450 hours on these tracks, same more expensive tracks. 2nd Service. It could not get any easier, I am 9n the jobsite and notice the tracks are getting there. Not going to change them until I see metal. I call them from the job site. 3rd Delivery. Awesome. Within 3 days they are in my yard. Delivery company contacts me before delivery. Bang. They are delivered. Summary do not hesitate to order from United. 100% Legit