Even though the use of multi-layer chrome plated Brass for the body of the first stage is a more conventional material choice... the performance of the B2 is truly superior to any other rival.
The “Z” designation is represented by the use of Zirconium as plating material for the precision machined Brass valve body.
The M1 employs state-of-the-art metals specifically chosen for extreme diving situations. Monel parts are used internally in the first stage for high strength, corrosion-resistance and oxygen compatibility.
Protect your new tank against superficial chips and scratches or spruce...