The RAP-S-KEYN5-4U replacement key knob is compatible with 2.25"/3.38" diameter D/E size arms and mounts that contain the Pin-Lock security nut. Verify the correct replacement key knob by matching...
The RAP-S-KEY3-5U replacement key knob is compatible with the RAP-S-KNOB3-5, RAP-S-KNOB3-5U and RAP-S-KNOB3/RAP-S-KNOB3U mixed combination security knobs that contain the 5 node security pattern...