Product name: Spur GearMaterial: 45 # steelModel: 2M 60 Teeth - 75 TeethTooth Pitch: 6.28mmThickness: 20mmTooth Treatment: High Frequency Quenching TeethRemarks1. The internal holes of gears are all process holes, which cannot be used directly. They can only be used after being reprocessed via themselves.2. Due to assorted batches, the size of task holes can also be different. Please confer with the actual length for details.