A ramp 200 has an attaching portion 221 and an arm holding portion 222. The attaching portion is molded with high polymer material so that the attaching portion has a screw hole 25 for fixing the ramp to the housing of an information recording disk apparatus by a screw. The arm holding portion is molded with high polymer material whose fiction coefficient is small, and the arm holding portion has a storing portion 27 to hold the suspension arm retracted from the recording disk and also has a guide portion 28 against which the suspension arm slides so that it is easily moved in and out of the storing portion 27. The attaching portion 221 and the arm holding portion 222 are united in one by subsequently molding the attaching portion and the arm holding portion.