Jiffy splice sleeve, size 4

Single-wire Jiffy Splice from TE Connectivity / Deutsch, housing part JS-04-00. Designed for in-line connections with one pin and one socket, it accommodates 6 AWG wire, or 8–10 AWG with an optional crimp sleeve reducer and seal. Made from silicone rubber and rated for 100 A continuous, with an operating temperature range of −55 °C to +45 °C. Contact removal tool 114009 is required for removal but not for installation.