Caps are made ??of aluminum.
These are pressed onto the pre-cut spring or spiral spring rods . See Help " corset caps pressing " .
Caps are sold in pairs or packs of 50 pair .
Caps are available in the following widths 5mm caps for all 5mm rods , 7mm caps for all 7mm rods, 9mm caps for all 8mm rods and 11mm caps for all 11mm rods .