The Petzl Micrograb is technically a replacement part for the Petzl Microflip wirecore lanyard but this adjuster will work on most wirecore or sewn eye work positioning lanyards. It is mid-line attachable and easy to install on premade lanyards. Unlike like most 'rope grab' adjusters, the cam spring on the Petzl Micrograb is internal to avoid the accidental snagging of the spring wire. The ergonomic shape of the body and cam adjuster on the Petzl Micrograb makes this device stand out from the crowd. If you are looking for a 'built for purpose' lanyard adjuster you can go past this one from Petzl.