The wrench (see figure) has a simple structure, has the characteristics of a plum wrench, and is highly efficient in operation, and can replace ten fixed wrenches, and has outstanding advantages in a large number of disassembly and assembly operations. During operation, pull the handle by hand and push the moving nut to move the clamping nut under the action of its head, tighten or loosen. When the handle is reversed, the wrench automatically opens and the nut is released.
Liquid Potassium Humate,Kalium Humic Acid,Potassium Humic Acid
Well Chemical Co., Limited , http://www.chemistryr.com