This is a set of 100 straps with lobster clasps. 50 gold x black and 50 silver x black, for a total of 100. The size, including the lobster clasp, is approximately 60mm to 70mm in total length. (There may be slight variations.) As there may be some defective clasps, we will include 5 extra straps (color cannot be specified). They will be shipped in OPP bags. Thank you.