This is the Great Planes 6 Ounce Self-Adhesive Segmented Lead Weights. FEATURES: Self-adhesive backed. Segmented in 1/4 ounce (7 gram) increments. Use it to help balance airplanes, cars, & boats. SPECS: Each Segment: Length: 5/8" Width: 7/16" Thickness: 1/8" INCLUDES: 24 pieces of lead weight COMMENTS: Clean surface before applying lead.