Hole Size: 25/64" (10mm) Stem Length: 12mm Head Diameter: 30mm Black Nylon Engine Cover Push Retainers Compare with: Honda # 91505-TY2-003, Auveco # 22703, Clip Lizard # 104-007, Disco # 13221PK, Disco # 13221B, Kent / Lawson # 1584318, Wurth # 050822703