European 35.5 / 55.5 360 Keyed Euro / Profile Cylinder Keyed Lock - Nickel 
Typically Used on doors that are 2-1/8 to 3 inches thick - depending on trim thickness

Overall housing Length: 90mm - 35mm T/ 55mm (3-5/8 inch) 
Cylinder Type: Euro / Profile 360 degree Turn
Material: Brass

Measurements: 
Inside Distance = 1-3/8 inch (35mm) Thumb
Outside Distance = 2-3/16 inch (55mm) Key
Overall (inside + outside) = 3-5/8 inches (90mm) 

Keyway: European Yale Y-1
Keys: 3 Cut keys

Color / Finish Options:
Polished Brass
Nickel  

Note:
This cylinder is for someone who wants a Yale Keyway, or something less expensive.
If a Brushed/Satin Nickel finish is desired; Lightly rub finish with 000 steel wool.
If you rub to hard, or to much, the underlying Brass material will show