Thimble bushing inserts help eliminate thimble elongation when under load, thus maintaining correct cable length & tension. Their slotted design is intended for use with anchoring tangs commonly found on ultralights. Simply open up the thimble, insert the bushing (w/tang), & then close. Made from Supertough nylon for superior high temperature & impact load resistance. For 1/16″, 3/32″, & 1/8″ cable (AN100-3 or 4 thimbles). Sized by tang thickness & edge-to-hole measurement.