Alright, the Balu, is one of our smallest luminaires, at only 25mm wide with an extra polycarbonate sleeve for a larger diameter cut-out of 27mm. 
But don’t let the small size fool you, it packs a real punch, with its 94-lumen output. 

The 24 Volt DC recessed Balu has a curved trim and lens, making fit snuggly into a 48mm to 63mm diameter handrail for a concealed look.