the other two have 10mm right hand threads

Durable high-quality metal housing

Speedometer

25 or M10x1

Enhances appearance and performance of your motorcycle

proton module led bakljus temp1421 the other two have 10mmTaillight, with red LEDs for taillight & brakelight. This is a miniature lighting module that is virtually invisible, since it is just 11mm diameter. Designed for use in custom projects, like for laminating into fiberglass, or use in any other custom application you can think of. Comes with a tinted lens, metal housing and is M3 threaded. ECE approved for rear use. Dimensions: 11mm lens diameter x 13mm long. Weight 5 grams. Sold individually