Heat Shrink Tube Size Rack
A six-lane stadium-step rack that sorts cut heat-shrink tubing by diameter — troughs 8/10/12/14/17/20 mm wide take the common 3:1 sizes from 2.4 mm up to 12.7 mm, each 74 mm long with a finger scallop so you can pinch a piece out without emptying the lane. 116 x 99 x 39 mm overall, open underneath to stay light, with two M4 clearance ears (4.5 mm) to screw it to a shelf or bench back.
organizer heat-shrink electronics bench