Plastic Ball Opening Watch Backs

Die sizes: 21, 26 and 29 mm. For opening and closing Baume & Mercier screw-back cases.

Will open from 19mm - 60mm large watch backs.
4 types of keys: round, flat, square and curved. Millimetre scale included.

1327.01 Extra Keys @ US$ 1.50/set

Opens to 50mm capacity.

Insert the hook into the notch of the case back and pop it open.