... pair of rivets with adjustable distance in between, on lever arch files, clipboards, Application: Specially used for simultaneously fixing ... adjustable distance in between, on lever arch files, clipboards, briefcases, etc Feature: Two spindle riveting at one action; And adjustable ... nailhead/pearl setting machines, hook button/D-ring riveting machines, etc. Lever Arch File Riveting Machine (JZ-936SH)