The Hitch pins are 4.5 long and 5/8 dia. The pins are 4 3/16" long from shoulder to inside of clip. Stainless Steel Replacement Pin for the 2" and 2.5" Tow & Stow Receiver Hitch Machined from stainless steel rod, these hitch pins are built to pull a serious load. Designed for use with B and W Tow and Stow line of receiver hitches. They are manufactured from high-tensile strength stainless steel for ultimate durability and long lasting good looks. In order to operate a Tow & Stow Hitch, a total quantity of three pins are needed. You will receive 3 pin with the purchase.