Hole Size: 1/2" (12.7mm) Overall Stem Length: 27mm Head Diameter: 30mm Black Nylon Rocker Moulding & Door Sill Retainers Compare with: BMW # 51717066226, Auveco # 22092, Disco # 13377PK, 13377B, Kent / Lawson # 1481962, Kimball / Midwest # 131028