The invention relates to a plastic two-piece retaining element for retaining at least one tubular part, having an outer shell 2 of hard material which can be attached via a retaining region 4 to a support, and having an inner shell 3 of soft material, which is inserted therein and has at least one bearing point 5 for holding the tubular part. In this case, the inner shell 3 is attached to the outer shell 2 in each case on both sides of the bearing point 5 via an anchorage 6, 6', there being a continuous cut-out area 7 in the region of the bearing point 5 between the inner shell 3 and the outer shell 2. <IMAGE>