HEAVY-DUTY STEEL: Our box blade is made of high quality steel, the steel plate is thick and strong, not easy to deform and is durable. The surface is treated with black powder anti-rust treatment, smooth appearance, no rust, and suitable for long-term use. EASY INSTALLATION: Shank Height: 16 in. Shank Width: 8 in. Designed for simplicity and ease of use, it is supplied with a full range of easy-to-install mounting accessories that allow the blade to be easily attached to the tractor via four point holes. ADJUSTABLE SHANK: Hole Interval: 1-1/2 in. Hole Diameter: 1/2 in. Each shank has three positional adjustment holes that are pinned to the reinforced frame for maximum efficiency. You can adjust them to suit your specific needs. WIDE APPLICATIONS: Box blade shanks are designed for rugged use by landscapers, farmers, and homeowners. They are great for landscaping, land leveling, back-filling, grading, etc. SPECIFICATION: One set of 6, three-hole Holes Box Scraper Shank, 100% brand new. 2 extra free replaceable teeth for your flexible use.