GARDNER BENDER 12-6 AWG Heavy-Wall Heat-Shrink Tubing, Black (2-Pack) HWT-0020 - The Home Depot
Shrink-N-Repair (M) - Wrap Around Heat Shrink (Black) for Medium Wire Diameters up to 0.5" - 36" Long - Split Heat Shrink Tape: Amazon.com: Industrial & Scientific
140pcs Heat-Shrink Tubing 2:1 Electrical Wire Cable Wrap Assortment Kit for Wires Repairs Soldering Auto Wiring Waterproof - AliExpress
Mini Heat Gun + Heat Shrink Tubing Kit,300W 392°F Heat Gun for Shrink Tubing ,Shrink Wrapping,Wire Connectors,Cable and Wire Shrink Wrap,Crafts Candle Making and Epoxy Resin Heating: Amazon.com: Industrial & Scientific