Bottom layer is chemically vulcanizing for permanent seal with tire. Dipped stem: 3/8".
Patch Plug Lead Wire Combo Units Vulcanizing Dipped stem1/4" Patch 2" 24ct.
Patch Plug Lead Wire Combo Units Vulcanizing Dipped stem3/16" Patch 1 5/8" 24ct.
Xtra Seal 13-673 Patch Plug Lead Wire 2-1/8” Combo 1/4” Injury Tire Repair 24pc
X-tra Seal 13-673 Medium 2-1/8" X 1/4" Tire Patch Plug, Lead Wire - PACK OF 23
LEAD WIRE COMBO 2 1/8" PATCH X 3/8" STEM (24ct)
5/16 In. Tire Repair Patch/plug Combo (12 Pc-box) Speedy Plug by Patch Rubber Co