Mainspring Let Down Tool with 6 Key Shafts

Contains:

• Set of six double ended steel key shafts
• Universal holder
• Key shaft approximately 9cm

Imperial clock key sizes:

• 12 popular sizes included: 2/3, 4/5, 6/7, 8/9, 10/11 & 12/14

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. Imperial = size in millimetres

• 2 = 2.80mm
• 3 = 3.00mm
• 4 = 3.20mm
• 5 = 3.40mm
• 6 = 3.60mm
• 7 = 3.80mm
• 8 = 4.00mm
• 9 = 4.20mm
• 10 = 4.40mm
• 11 = 4.60mm
• 12 = 4.80mm
• 13 = 5.00mm
• 14 = 5.20mm