Replacement Hook Drive Gear - Part # 546087New Replacement Part - High-quality replacement hook drive gear for Singer sewing machines.Part Number:Singer Part # 546087Specifications: Hole size: 7.90 mm or 5/16" Teeth: 22 teeth Thickness: 8 mm Compatible Singer Models:Fits Singer models 118, 680, 690⚠️ Important: These models use two different gears depending on the year. Please refer to your part number or measure your gear to ensure proper fit before ordering.Why Choose This Replacement: New replacement part - Not used or refurbished Quality construction - Reliable performance Direct replacement - Fits like the original Exact specifications - 22 teeth, 7.90mm hole, 8mm thickness Important Notes: New replacement part Part # 546087 Fits Singer 118, 680, 690 Verify part number or measure gear before ordering These models use different gears depending on year Ready to install Condition: New replacement part.