3.2mm (1/8in) T section. 3.2mm (3/32in) width and overal height of T section in 1.0mm (40 thou) thick styrene.
Pack of 7 lengths each 375mm (15in) long.
The central leg of the T provides resistance to bending, so T section is often used as supporting posts or strapping for walls, fences and the side planking of railway wagons.