Chrome studs S are the round decorative buttons commonly seen on saddlebags and seats. Conchos C are the larger round decorative items that have a tassel coming out the middle and are most commonly found between the straps on the body of the saddlebags.  These are added to saddlebags because it matches the seat on the motorcycle or because the buyer likes the look of it.  Pictures of stud locations and conchos can be seen here or on the product pages of each bag. You can add just studs, just conchos or both studs and conchos, SC.The chrome studs are added to the perimeter of lid of the saddlebags, along the flap edge and on the box top bags they are along the top of the bag and on the bottom of the skirt or valence.  On medium and large saddlebags they are also on the face of the bags, where the buckles are located. There are many pictures that show bags missing studs in some of the above locations, or different spacing of the studs. The same is true regarding the conchos. To have the amount of studs and condos changed or their location it is  best to call us at 888-265-9650 or email sales@leatherworksinc.com