There can be a lot of confusion in today’s dabbing world, especially when it comes to concentrate/water pipes in their relation to nail size. One of the main problems that we see from amateur dab heads in the industry is the ability to discern between a male or a female water pipe/concentrate pipe. As a general rule of thumb, most water pipes/bongs are going to be female in nature meaning, a device, usually a downstem or bowl, goes inside the pipe, where as with a concentrate pipe, which is usually male in nature, bowls and downstems can be probed with the pipe. (similar to male/female genitalia) *wink wink*
Here are examples for a better understanding of what the difference between a male and female pipe typically is.
Female Water Pipe (Straight Percolator Beaker Water Pipe)
In the following diagram displaying the Straight Percolator Beaker Water Pipe, the downstem is inserted within the female part, and then the bowl is inserted into the downstem. Pipes of this nature are best used with cannabis flowers or buds.
Male Concentrate Pipe (10 Inch Single Dome Stemless Honeycomb 14mm)
In the following diagram displaying the 10 Inch Single Dome Stemless Honeycomb 14mm concentrate pipe the glass nail is placed within the male part and then the bowl is placed over the inserted glass nail inside the male part. Pipes of this nature are best used with dabs or medicated concentrates.