HT-H518E1/H518F1 With only one F plunger, in order to compress BNC and RCA connector, you have to remove the Fplunger .
HT-H518E2/H518F2 with 3 plungers, They are for F, BNC and RCA Connector.
1. Insert the correct plunger into the tool's holder and then insert the stripped cable into the connector , make sure the cable isinserted to the end.
2. Place the connector with cable into the tool's Holder .