Ev-n-spred pro commercial professional broadcast spreader * 13-in diameter pneumatic rubber tires in a wide track for extra stability and easier pushing even with heavy loads of fertilizer * Strong 1-in diameter tubular-steel frame with a long-lasting black powder-coated finish to guard against rust * Easy to insert around the tree?s dripline, and the slow-release formula lasts all season * 5 Year limited warranty; high speed gearbox