This past summer I purchased a Copper John Dead Nuts Pro sight with 5 .019 pins. Well this weekend while at the Potter County Bowhunters Festival, Some how 2 of my red fiber optics got broken. Well I contacted Copper John This A.M. and within an hour I had an email asking for my mailing address so they could send me an assortment of replacement fiber optics for my Dead Nuts Pro Sight. What great customer service. They make a great product and I would have reccomended them on that alone but when you provide super customer service That is how you make lifelong customers. I know they made a lifelong customer out of me. I just wanted to pass along this info to all who care enough to deal with a quality company such as Copper John. Just as a side note this sight alone helped me cut my group size in half.