Jaws capacities: 12” wrench: 2-1/2” to 4-9/16” (63.5-116 mm), adjustable with 3 positions. 2-piece adapters: 1pc 1/4"(F)×3/8"(M) adapter and 1pc 1/2"(F)×3/8"(M) adapter included, connect 3/8” 3-jaw oil filter wrench to 1/4” or 1/2” wrench.
eBay