Material Chrome Plated Steel or Stainless Steel Size 3″ (H) side wall Features Designed for newer truck axles with longer studs Unit & Package Sold by each, color plastic bag Chrome Plated Steel I.D. Overall Height Fits 20024 this listing 8″ 3″ 8-1/2″ dia. axle, 8 of 5/8″ studs 20028 8-1/4″ 3″ 8-1/2″ dia. axle, 8 of 3/4″ studs