Smartwatches Accessories -10 Pieces Flat Mineral Glass Watch Replacement Parts 29.5mm Watchmakers Highlights Generic Brand 10 Pieces Flat Mineral Glass Watch Replacement Parts 29.5mm Watchmakers Description: Material: mineral glass; 28mm-38mm diameter mineral watch glass 1.0mm thick flat watch glass; Please make sure you have the exact size before purchasing by precision measurement (caliper); Diameter: 28/28.5/29/29.5/30/30.5/32/32.5/34/34.5/36/38mm (there may be 0.05mm difference), thickness approx. 1mm These crystals are made to replace watch crystals for wristwatch or pocket watch; Package includes: 10 pieces of mineral glass