Heat treated steel black oxide finish.
Block size 1˝ (25mm). Set in plestic rack consists of:24pcs Studs(4 ea, 3/4/5/6/7/8 inches or 75/100/125/150/175/200mm.)
4pcs Coupling Nuts
6pcs Flange Nuts
6pcs step Clamps
6pcs Step Blocks
CK-18, CK20, CK206, Used Wooden Plate to keep.
The parts of every specification all can be purchased individually.