• Play role in watch waterproof,suitable for watch repair and DIY watchmaker
  • thickness 0.7mm 500pcs new o-rings gaskets,the o-rings different 15 sizes
  • 15 different sizes from 31to 40 mm: 31, 32, 33, 34, 35, 36, 37, 38, 39, 40mm.
  • Comes 50pcs each size in a poly bag (total: 50pcs x 10 = 500pcs)
  • Play role in watch waterproof,suitable for watch repair and DIY watchmaker
  • thickness 0.7mm 500pcs new o-rings gaskets,the o-rings different 15 sizes
  • 15 different sizes from 31to 40 mm: 31, 32, 33, 34, 35, 36, 37, 38, 39, 40mm.
  • Comes 50pcs each size in a poly bag (total: 50pcs x 10 = 500pcs)