2-pole (mono) A-gauge 6.35mm jack plugs, with nickel-plated contacts and bodies, and wrap-over style cable clamp. These types have a large cable entry, allowing cables up to 9.5mm diameter. NYS224L has a 12.5mm diameter straight shell, NYS225L has a 19mm diameter shell with plastic strain relief.
Rean is a brand of Neutrik AG.