Solid Oak Slotted Racetrack Bases Clearance: Shop Solid Oak Slotted Bases in the Racetrack style. All slotted bases make a basket two inches larger than the corresponding basket base. These bases are considered racetrack style because the shape resembles a racetrack. Shop various sizes to get the correct style for your project. These Solid Oak bases are excellent for basket weaving, DIY crafts, and other types of projects. They are made in the USA from solid oak. HH Perkins has been a trusted supplier of Rattan and wood products since 1917.