Must follow FAA guidelines for material type and application. High Volume, High Output Spreader designed for Airport Use. High Speed 6:1 gearbox handles dry salt, sand and salt/sand mixes. 8 tooth sprocket and 2” drive shaft provides the most fluid and smooth conveyance of material in the industry. Twin 24” six-fin spinner disks are capable of spreading granular material from 6’ to 60’. Heavy duty self Cleaning style pintle chain with 3/8” extra thick cross bar. Standard drag chain take-up to the rear for easy maintenance. Top Screen breaks up material to minimize damage to drag chain.