These fists are an accessory for customizing 3DKitbash's Quin: 3D Printable Fashion Doll and Inventing Platform. Check her out here: http://www.3DKitbash.com/quin
Simply print (support-free) and snap to your pre-printed Quin Doll.
Quin is a property of and available at http://www.3DKitbash.com.
Prints support-free in about 35-45 mins with most standard settings.