Bitset 31 delig SE91230 bits PH = 1, 2, 3 PZ = 1, 2, 3 TT = 7, 8, 9, 10, 15, 20, 25, 27, 30, 40 SQ = 1, 2SL = 3.5, 4.5, 5.5, 6.5, 8 HEX = 2, 3, 4, 5, 6, 7, 81 = magnetische bithouder met snelsluiting