00 21 50 V01 Set with module adapters Set with 4 module adapters: 2x with D-ring, 2x with two rubber loops. Each with two sturdy fabric straps for fastening to the MOLLE straps of the 00 21 50 KNIPEX Modular X18 tool. Additional attachment points: The practical rucksack buckles enable you to individually attach numerous items, e.g. key rings.