1892-004 glass is used in E. Thomas & Williams miner's lamps
1896-001 glass is used in 1896 miner's lamps
1897-001 glass is used in 1897 miner's lamps
3995 and 3996 glass (same size) are used in tealight miner's lamps
3996 glass is a heat-resistant glass
Made of borosilicate glass with low expansion coefficient and therefore heat resistant. It won’t break when you light the lamp. Dishwasher safe.
Made in the Czech Republic.