For better securing of the pin in {HEAD ~ its closed position}, the pin and the bore exhibit, on {TAIL ~ their side} facing the object to be tied, catch edges engaging behind each other in the releasing direction of the pin 
For better securing of the pin in { HEAD ~ its closed position } , the pin and the bore exhibit , on { TAIL ~ their side } facing the object to be tied , catch edges engaging behind each other in the releasing direction of the pin
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH