Hoppe CES Half Cylinders 90 degree with Crescent Knob 8751831

Hoppe CES half cylinder for inactive doors. Color: Resista Brass F77-R. 360 degree cylinder with Crescent Knob. Used on doors 2-1/8" thick. Required for In Active Handle Set Manufactured by Hoppe. Inside distance A = 10mm Outside distance B = 35.5 mm. Cylinder stamped CES.