Mainspring Let Down Tool with 3 Key Shafts

Mainspring let down tools are used to safely unwind your clock’s powerful mainspring, so that you may disassemble the movement for proper cleaning and lubrication without injuring yourself and causing extensive damage to the movement.

• Durable plastic handle
• Double ended key shafts made from quality steel
• 3 double ended key shafts: No.5, 6, 7, 8, 10 & 12 (Indian sizing) (metric equivalent 3.50, 3.75, 4.00, 4.25, 4.75 & 5.25mm)
• Hexagonal handle fitting 11mm