The NESCO SCI-25 is a 2½" steel insulated set screw connector built for professional electricians and contractors working with larger conduit runs. Engineered for use in electrical boxes, cabinets, panelboards, and enclosures, this connector delivers a secure, vibration-resistant connection that meets the demands of commercial and industrial job sites. The insulated throat protects conductors from abrasion at the entry point, reducing the risk of insulation damage during pull-through — a critical detail on high-stakes installations. Whether you're roughing in a commercial build or upgrading an industrial panel, the SCI-25 is a reliable, code-compliant choice that installs quickly with a standard set screw. Specifications Model SCI-25 Trade Size 2-1/2" Material Steel Connection Type Set Screw Insulated Yes — Insulated Throat Category Connectors & Accessories Vendor NESCO