To fold and unfold the Husky 99731 Folding Lock-Back Utility Knife, locate the lock release button on the side of the handle, press it to unlock the blade, and slide the blade out until it locks into place. To fold, press the button again to unlock and carefully slide the blade back into the handle. For further assistance, please refer to the manufacturer’s instructions or contact their support team.To fold and unfold the Husky 99731 Folding Lock-Back Utility Knife, locate the lock release button on the side of the handle, press it to unlock the blade, and slide the blade out until it locks into place. To fold, press the button again to unlock and carefully slide the blade back into the handle. For further assistance, please refer to the manufacturer’s instructions or contact their support team.