An operating lever 28 cooperates with {HEAD ~ a control rail} 30 to control opening and closing of the grip and attachment and {TAIL ~ detachment} of the grip 24 to the rope 10 
to control
An operating lever 28 cooperates with { HEAD ~ a control rail } 30 to control opening and closing of the grip and attachment and { TAIL ~ detachment } of the grip 24 to the rope 10
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH