I wanted to update the 17x7 wheels on my 03' GMC Envoy and had a hard time finding something with the 6x5 (6x127) bolt pattern. Custom wheels were too expensive and I wanted a factory wheel. Purchased adapters from Venom that converted the bolt pattern to 6x5.5 (6x139.7) which is a very common pattern on many different vehicles. Was able to pick up some 18x8.5 factory take offs from a 21' Suburban for cheap and with the 1.25" added spacing from the adapters the wheels are just how I like them with the tire tread slightly outside the fender wells. These adapters have a lip machined on the outside of the bore hole that fits the wheels (78.1) perfectly! This is ideal because the adapters are hub centric with the correct bore size so the adapter is supported and centered by the hub, not the lug nuts and the wheel is then centered and supported by the lip on the adapter so very easy to install the wheels and lug nuts. No vibrations and a smooth ride! I was fortunate that Venom had the adapters in stock so be sure to call them if you can't find what you need online and I highly recommend having them make you a set if needed with the proper bore hole for your vehicle and wheels. High quality craftsmanship and materials used on their products and I'm very happy with the price I paid as they were slightly more than the generic options I saw online without the wheel centric lip but less than other custom products from other fabricators. I give two thumbs up for Venom products!