Hole Size: 1/2" (12mm) Stem Length: 17mm Top Head Size: 12 x 12mm Bottom Head Size: 14 x 20mm Yellow Nylon With Sealer Moulding Retainers Compare with: Hyundai # 87759-3V000, Auveco # 22331, Disco # 17935PK, Disco # 17935B