Fellowes 35250 Powershred Performance Oil, 12 oz. Bottle w/Extension Nozzle Lubricant keeps your shredder running at peak performance by conditioning the cutters and extending the life of your shredder. Convenient 12-ounce squeeze bottle with extension nozzle to ensure complete coverage For best results, oil shredder each time you empty the wastebasket or a minimum of twice a month.