The Eerder rear light bracket is exactly tailored to fit the aluminium Son rear light exactly matches the countour of it. It also fits the Busch und Müller rear light called Toplight S which shares the internals with the Son. This more affordable plastic housing has slightly bigger ears. This is also the light shown on the photos. The Eerder rear light bracket can be used on a number of positions on the frame and upright or pointing downwards as can be seen on the photos. There's a Lefty version and a Righty. Have a good look at the possible mounting points on your bike and the desired position of your light. When in doubt or for special situations choose the Swivel version for added flexibility.

As a rule of thumb:

• use the Righty on the disc brake boss in upward position, the Lefty in downward position (just what you prefer visually or maybe practically)
• on other bosses use the Righty on the RH side of your bike on left driving roads and the Lefty on the LH side of your bike on right side driving roads

Specs:

• Material: 304 stainless steel in 2 or 3mm thickness machine tumbled
• or 3mm thick Aluminium 5083 (highly corrosion resistant) dark grey RAW machine tumbled
• 50 mm hole distance of the M5 threaded holes (no nuts needed) and a 6.2 mm mount hole for attaching it to your frame with either M5 or M6
• A2 stainless steel M5x8 flat head countersunk allen screws included
• Weight: 5-19 gram (screws 3 gram) depending on the version