That differs greatly by manufacturer and configuration. As a guideline: 15 to 40 points on a pushback or baggage tractor, 20 to 50 on a catering truck, de-icer, or ambulift, 15 to 40 on a passenger boarding bridge, 25 to 60 on a loader or transporter, 4 to 12 on a dolly, and 30 to over 200 per section of a baggage system. We count them during the fleet or installation scan and record them in a lubrication plan per equipment type.