The 24 Hours is the fourth model in the Racing line. Assembled stem height is 470 mm, inner diameter is 11 mm, plate diameter is 190 mm, and the minimum base depth required is 250 mm. The model fully disassembles, the plate has a slot to hold the mouthpiece, and the purge is shaped like an exhaust pipe. The stem, mouthpiece, plate, plate washer, diffuser, and connectors are made of AISI 304 stainless steel, with an engineering-polymer base.