Gates 150XL037 PowerGrip Timing Belt, Extra Light, 1/5" Pitch, 3/8" Width, 75 Teeth, 15" Pitch Length Neoprene body for resistance to dirt, grease, oil, and moisture Fiberglass tensile cord for strength, durability, and resistance to elongation Nylon tooth facing for quieter operation and resistance to wear Recommended for use with PowerGrip timing pulleys for increased load capacity and improved registration No lubrication or re-tensioning necessary