From Knowles - Harrows
Sections raise hydraulically for easy trash removal and backing up. Sections are easily moved to 90 degrees for transport. Heavy duty tubular frame is reinforced at all stress points. Heavy wear shoes are provided for longer life. Heat treated spring teeth resist wear and breakage. Size of tooth - 1-3/4' x 5/16' x 39'. Teeth require 1/2' mounting bolts. 3/8' holes provided in teeth for replacement points on 2' centers. Sections are joined together with 1' diameter bolts. Jackstand for easier hitching is standard equipment. 15' wheels with large flotation type tires are standard. A rugged adjustable hitch is provided to fit tractor draw bar. 23' tooth bar spacing.