Mini review of Lamart's 18mm male2male carbed tube wpa:
Compared to Lamart's standard 18mm wpa (66mmHx23mmW), Lamart's 18mm carbed tube wpa (74mmHx52mmW with handle) is a more substantial glass piece: both male joints are frosted, & a 15mm wire mesh is situated at the base of one of the male joints. I received it in the US 19 days after the order was placed.
Issues with the standard wpa: If a water piece is used a wpa is crucial, but the standard wpa gets too hot to touch particularly over 400F. Also when the hit is finished, the wpa has to be removed from the water piece so as not to blast the herb out of the joint or the rimmed basket - this is caused by the water's back draft.
Pros: The carbed tube/handle wpa is more easily manipulated, both in & out of the water piece, than the standard wpa,
With the carb kept open, the wpa does not need to be removed from the water piece after finishing the hit,
If carbed during the hit, the effects of vaping are more pronounced.
Con: The carbed tube wpa is twice the price of the standard wpa, & requires some attention during use.
Conclusion: Highly recommended; carbed tube wpa > non-carbed colored handle wpa > standard wpa