5 mm And 3 mm LED Colour Sort Block
A 118 x 72 mm bench block with six colour lanes. Each lane has eight 5.4 mm wells for 5 mm (T-1¾) LEDs and eight 3.4 mm wells for 3 mm LEDs. You drop each LED in dome-first: the rim (about 5.8 mm and 3.9 mm) catches on the top face, so the legs stand up ready to grab, sorted by colour instead of tangled in a bag. At one end, a raised slot holds a CR2032 (20 x 3.2 mm) on edge with 6 mm sticking out, so you can pinch the LED legs across the cell for a quick colour and polarity check before soldering.
organizer led electronics-parts sort-tray