Upgrade Hydraulic Crimping Tool/Hydraulic Crimper with 9 Dies for Stainless Steel Cable Railing System, Cable Railing Hardware Hydraulic Crimping Tool DC03. Application: Hydraulic crimping tool for crimping stainless steel cable railing fittings, various deck railing kits fitting size from 1/8" to 3/16" fittings onto 1/8" to 3/16" cable.