DEI Protect-A-Boot XL- 8in - 8-pack - SilverProtect A Boots XL Ringless solve the problem of burning and cracking plug boots and wires from header and engine heat. Protect A Boots are made from a high temperature resistant glass fiber material and treated with a proprietary coating, Protect A Boots XL Ringless provide spark plug boot and wire protection from extreme under hood heat and helps prevent burn through, hardening and cracking of boots. For thicker boots, like MSD or Taylor's, we