KnuKonceptz Black 1" (25mm) 0 Gauge 3:1 Heat Shrink Tubing w/Adhesive Glue - 10 Pack - Adhesive lined makes for sealed connections (10) 2" (50mm) long pieces 3:1 Shrink Ratio Fits 1 Gauge, 1/0 Gauge, and 2/0 Gauge terminals