STL-24 crystal sync controller kit for Bolex ESM EBM EL, Similar to Tobin TXM-24
£293.41
It will only work with the Bolex EL, the EBM, and the ESM! See the test instructions below. The included cable is ~0.5m (~1.6ft) long. It uses 24 gauge, four-conductor cable. It has Amphenol-Tuchel 7-pin male straight connectors.