The wires do not need to be stripped as the IDC connection in the crimp does that for you. They are very simple to use, insert one wire in each hole and just squeeze down using pliers.
1000 x GENUINE DEXGREEN 8A 2 WIRE JELLY CRIMPS BT VIRGIN PHONE CONNECTOR JOINER
BOX OF 500 CLEAR 8A 2 WIRE BT VIRGIN TELEPHONE JELLY CRIMPS CABLE REPAIR JOINER
1000 8B 3 way Telephone Jelly Crimps 2/3 wire BT Virgin Telecom Connector Joiner
1000x Genuine Dexgreen 8A 2 wire phone jelly crimps BT Virgin connector joiner
3000 8A/1 UY2 2 Wire Telephone Jelly Crimps BT Virgin Telecom Joint + Crimp Tool
2000 8A/1 UY2 2 Wire Telephone Jelly Crimps BT Virgin Telecom Joint + Crimp Tool