READ FOR DETAILED DESCRIPTIONS! Everybody loves wheels… you can never have enough. With more choice than ever before out there, and myths all over the internet, the world of wheels is a little confusing. This card will quickly explain different styles and characteristics of wheels as well as a wheel index. If you are already know everything thing there is to know but are looking for new wheels then check out this website: http://www.sk8whls.com/. It is a massive wheel index that categorizes wheels based on diameter, durometer, color, core position, lip, and brand. The five things to consider are DIAMETER, CONTACT PATCH, EDGES, DUROMETER, and CORE POSITION. DIAMETER is the size (height) of the wheel and it is measured in millimeters (mm). In conventional wisdom, larger = faster and smaller = quicker acceleration. The main difference you will notice is that you can roll much faster over rough surfaces when you are on bigger wheels, however, larger wheels are generally harder to break grip and harder to control whilst sliding. CONTACT PATCH is the width of the wheel. Generally wheels with a wider contact patch offer more grip and less slide. EDGES also affect how a wheel slides sideways across the road and how much grip it has. There are basically three kinds of edges. A square edge is very grippy and meant for racing. A radiused edge is rounded and is used for sliding and hard carving. A bevelled edge is halfway between radiussed and square edges, basically a middle ground. DUROMETER is a measurement of the hardness of a wheel. It is measured on a scale from 0a-100a; the smaller the number, the softer the wheel. Softer wheels have more traction, easier flex (into cone patterns) and inevitably wear down quicker, being prone to flat spots and the like. CORE POSITION refers to the placement of a longboard wheel's core when you look down on the contact patch. There are three mail core positions. Centerset cores are positioned in the center. Centersets wear down slowly and are flip-able, but are not the best for griping or sliding. Backset cores are flush with the back of the wheel. Backset wheels are made for freeriding, they are super slidey but will cone quickly. Sideset cores are positioned somewhere between centerset and backset. Sideset off the most grip. I hope this info is helpful! Remember, watch the video for a quick rundown on wheel styles, check out the images for easy infographics on longboard wheel styles, and check out http://www.sk8whls.com/ for a huge wheel index. Happy skating!