The flared vinyl sleeve insulation on our 3M™ Scotchlok™ color coded Standard Male Disconnect Terminals helps ensure proper crimping and is abrasion-resistant for safety. The tongue slips over the female tap to create a secure attachment that doesn't loosen over time, and the butted-seam barrel has a funnel-shaped, rigid-molded, polyvinyl chloride sleeve for added protection. The blue sleeve helps you guide the wire into the correct position and relieves mechanical stress at the insulation point to ensure proper electrical contact. This terminal are UL Listed, CSA Certified and RoHS 2011/65/EU Compliant for quality and safety.