To enhance the locking force of a clamp for fixing a wire harness to the car body in fixing to the car body, and to easily remove the clamp in detaching from the car body.

This offset type clamp is so constructed that a car body locking part 12 provided with a shaft part 13 and a blade part 14 is projected in the offset position of a base plate, a recess part 16 is provided in the inner surface of a branch part of the shaft part 13 and the blade part 14, a through-hole is provided along the shaft part 13 in the base plate part, pins 20, 21 passing the through-hole are erected on a contact plate 19 coming into contact with the base plate part, and a pin member 18 is provided having ribs 22, 23 projected from the tips of the pins and fitted in the recess part, whereby the ribs of the pin member 18 are fitted in the recess part to expand the blade part to heighten the pressing contact force of the notch to the car body through-hole peripheral edge, and when the pin member 18 is pulled in the direction of being removed from the car body panel, the blade part fitted with the ribs in the recess part is pulled together with the shaft part to be removed from the through-hole.