22-18 gauge heat shrink spade terminals. #10 Stud size. Translucent red heat shrink insulation with adhesive. Seals against water and the elements. Temperature rating of 221°F (105°C). Fork/Spade terminal made from tin plated copper. Rated to 600 volts.
Compatible with 20 Gauge and 18 Gauge Wire. Also see their Cross-Link alternatives.