The Stihl 1120 791 6105 Collar Stud is a genuine Stihl product designed for 2-stroke gasoline engines, specifically compatible with Stihl chainsaws. This stud is a single gold-colored replacement part that helps secure the chain on the chainsaw. It is an essential component for maintaining and repairing your outdoor power equipment, specifically catering to those who prefer Stihl brand products for their yard, garden, and outdoor living needs.