Abstract: The invention features a flexible protective strip having one or more longtitudinally extending inserts which provide the protective strip with greater impact resistance, greater strength and an improved locking action in the mounting member. The resilient strip preferably includes a pair of oppositely disposed, inwardly extending latch members which include inserts to provide the improved locking action. The mounting member preferably includes a web portion having a pair of oppositely disposed web-latch extensions extending across a chord of the body, substantially parallel to a tangent to the circumference of the body at its mid-line, and at least one leg member extending from the web portion away from the body.