BS 464 wire rope thimble is a heavy duty steel thimble can create reinforce loop eye with more strength, sturdiness, and crush resistance, used to protect the rope eyelet against pinching and abrading, can greatly extend its working life.
To know the right rope thimble size to the cable, for example when you are using 1/2″ uncoated rope cable, use a 1/2″ wire rope thimble.
Make sure that the cable thimbles size properly and securely fastened in the eye of the loop, not too loose or too tighten, so they can create an extra layer of support to connect with other properly sized rigging fittings.
While you are using a vinyl coated cable, you should multiply the actual size of the cable, usually use a larger size thimble than normal, for the actual diameter is the thickness of the vinyl coating plus the inside wire rope diameter. For example, if you are using a 5/16″ vinyl coated cable that is coated to 3/8″ diameter, you’d want to use a 3/8″ wire rope thimble.