NB-0163 is the Olympic Bolt for Hogger Blades on a Balemaster Hogger. Its compatible Balemaster part number is AAA00163. This part will fit all Balemaster Hoggers. There are up to 26 of these per hogger, depending on the model. If you have any questions about the part please do not hesitate to call and speak to one of our parts experts at (844) 302-4881. When ordering please call to confirm amount of bolts needed for your Hogger