Abstract: An insulating cord grip capable of being locked and unlocked by hand includes two cylindrical sections each having a hand grip on its outer surface. A locking of one of the sections relative to the other is achieved through relative rotary motion about a common axis to move one section axially with respect to the other. The locking means include a locking thread on the inner surface of one section and one on the outer surface of the other section. The two sections cooperate as they are rotated relative to one another with an internal cable clamping member which member tends to urge the sections apart axially with increasing force as the axial approach of the two sections urges the clamp against a contained cable with increasing force.