CURT towing starter kits are the all-in-one accessory package to accompany your trailer hitch, equipping you with the necessary components to hitch up and hit the road. Each towing starter kit includes a ball mount and a hitch pin or hitch lock, eliminating the need to purchase these items separately and removing the stress of needing to find components of matching size. This CURT towing starter kit features a Fusion ball mount #45134 with a 2" x 2" shank to fit a class 3, 4 or 5 trailer hitch. CURT Fusion ball mounts are a unique ball mount option, featuring a permanently attached, welded trailer ball. Much like CURT Euro Mount ball mounts, Fusion ball mount trailer balls require no torqueing and can never be loosened or stolen, making them very secure and reliable. The Fusion ball mount in this towing starter kit features a 2" diameter trailer ball, a 2" drop and a 7-1/2" length. It of