Plumbing Tools Challenge: Can You Master Every Pipe Tool Like a Pro?Share:FacebookPinterestTwitterMailWhich tool can tighten or loosen the nut under the sink?15%Next Correct Incorrect The basin wrench’s swiveling jaw is ideal for reaching tight spaces beneath sinks. Which tool can tighten or loosen the nut under the sink? Adjustable Spanner Basin Wrench Basin Spanner Flaring Tool 15%