Article no. ALU5586+color code without snap ring, 40° pivoting, 355° rotatable, for 50 mm diameter light source, ceiling cutout 90mm for indoor use, die-cast aluminum recessed spotlight, front panel can be completely removed for changing the light source. excluding light source, external diameter 102mm, excluding low-voltage socket, item no.: 55004 (SKIII), excluding high-voltage socket+strain relief, item no.: 55003 (SKII)