A glass cone piece 14mm is a type of glass accessory that is used with a water pipe or bong. The cone piece is the part of the bong that holds the dry herb and is inserted into the bong through the downstem. It is 14mm in diameter, and it is a standard size for many glass bongs and water pipes. It is sometimes called a bowl.
The 14mm glass cone piece typically has a male joint and is used in combination with a female joint on the bong or water pipe, creating an airtight seal. The cone piece has a bowl on the top where the dry herb is placed and a hole on the bottom for the smoke to travel through.
A 14mm glass cone piece is usually made from borosilicate glass, which is a type of glass that is resistant to thermal shock and can withstand high temperatures. It's also easy to clean and maintain.