I started working with an ST roof system back in 2000, it was one of the first ones Prolyte made. I've been using Prolyte ever since
Jon Reeves JDR Rigging, FinlandACC-LP-30-D75 Locking Pin 30mm for D75 Truss
Catalog number: ACC-LP-30-D75 - Item code: 111600057Locking pin for truss equipped with a gable-fork connection.