Adjustable Multi-Functional Nut Wrenches Universal Wrench Kit 2-Piece Affordable Reliability, Re-Innovation Our sole goal is to create quality tools at an incredible value We are in business to bring affordable reliability to the world of tools Material: carbon steel Large adjustable wrench - Length: 280mm, weight: 380g Small adjustable wrench - Length: 210mm, weight: 180g Opening size: 23-32mm（large) Opening size: 9-22mm and 6-15mm（small) Hardness: 38-48HRC Two universal wrenches that fit all kinds of bolts and nuts Efficient and practical, with the light weight system, one hand movement is enough Ergonomic bi-material handle brings a non-slip experience and can save strength therefore raise thework efficiency The secret is the self-adjusting technology, which allows them to automatically adapt the size Ideal for assembly and repair of mechanism, plumbing, carpentry and gardening Using this set, it is a good solution to solve your problemof faucet, valve, pipes, radiator, boiler and wheel