All used Outdoorsmans Micro Pan Heads are refurbished with any replacement pieces needed and fresh grease for smooth operation. We won't sell any used equipment unless it passes our standards of operation and reliability. The Outdoorsmans Micro Pan Head is a great option for the ultralight hunter. Weighing in at only 7.5 oz, it can hold any pair of binoculars and most spotting scopes perfectly still. A general recommendation to avoid unwanted vibration is to use the Micro Pan Head with spotting scopes up to 65 mm. The Micro Pan Head's tilt and pan functions are extremely smooth, making it the best head on the market when ounces matter in your pack. The difference between A grade and B grade is cosmetic. A grade Outdoorsmans heads will show almost no signs of wear, B grade heads will show signs of field use and wear. Disclaimer: Photos only represent examples of A grade and B grade heads. Photos are not the actual head you are buying.