3.5mm audio jack usb-c / lighting keychain holder

Basic keychain holder for 3.5 mm jack headphone dongles

Variables

UGREEN

"cable_diameter"= 4mm 
"data_connector_length"= 28mm 
"data_connector_plug_length"= 7mm 
"data_connector_width"= 10.25mm 
"data_connector_height"= 5mm 
"audio_connector_length"= 28mm 
"audio_connector_diameter"= 8mm 
"clearance"= 0.5mm 

Apple

"cable_diameter"= 3.75mm
"data_connector_length"= 20mm
"data_connector_plug_length"= 3mm
"data_connector_width"= 9.125mm
"data_connector_height"= 5.25mm
"audio_connector_length"= 20mm
"audio_connector_diameter"= 7mm
"clearance"= 0.5mm