Yamaloy threading kit contents:1x 16ER B 1.00 ISO insert, 1x 16ER B 1.25 ISO insert, 1x 16ER B 1.50 ISO insert, 1x 16ER B 1.75 ISO insert, 1x 16ER B 2.00 ISO insert, 1x DER 2020 K16 toolholder, 1x T15 torx key. Supplied in plastic tube.