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> 1/2" diamond tipped drill bit glass bottles/blocks
1/2" diamond tipped drill bit glass bottles/blocks
1/2" diamond tipped drill bit glass bottles/blocks
Keep Plenty of water on the bit. Have someone spray water on during drilling if your drilling a lot of holes for your project. Water acts as a lubricant and your bit will last longer. If your drilling several holes email me about a sintered bit.