PRODUCT DESCRIPTION

SKU: GP0486B

1. Borosilicate crown glass           1.51 r.i. app.
2. Dense flint gl ass                     1.62 R.I. App.
3. Extra dense flint glass             1.65 R.I. App.
4. Double extra dense flint glass     1.70 R.I. App.

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SIZE: 32X32mm