The steel can be folded transversely or longitudinally. The hindwings are longer than the elytra, folded longitudinally and transversely under the elytra. This action spread the wing and unfolded longitudinally and transversely. The spans are connected with a protrusion which is free to move longitudinally. The males have horns, which are small (about ), slanted backwards and longitudinally grooved. The stipe is slender, glabrous, and longitudinally furrowed or ridged. This is a tube with a slit cut longitudinally through its wall. The plantar fascia is made up of predominantly longitudinally oriented collagen fibers. The pods have a width of with longitudinally arranged seeds inside. However the RWD Nissan Silvia produced from 1988 were built with a longitudinally aligned SR20DET. Motorcycles with longitudinally mounted engines are more suited for shaft final-drive. This needs a pair of arms longitudinally separated. The Saab 96 had a longitudinally mounted engine layout. Attached to this are five bands of muscle running internally longitudinally along the ambulacra. The stem bark is greyish brown, smooth or longitudinally wrinkled.