When it comes to the origin of the Allen wrench, we must first start with the Allen screw. In some non English speaking countries in Europe, "Allen key" is called "UNBRAKO key". This "UNBRAKO" is actually the earliest hexagon socket screw brand, founded by the American SPS company (standard pressed steel company) around 1911. SPS company imported a kind of socket head screw from Britain earlier, but the price is very expensive. In order to save costs, SPS company decided to produce it by itself. H T. Hallowell said in his memoirs: "we began to try to make screws w

Classification of household decoration tools: Knock the wall: bamboo handle hammer, chisel and heavy hammer; Mason: tile cutter, batch cutter, wood chopping board, ink bucket, pistol drill, impact drill, etc Shovel, Tieqiu Plumber: bench type reamer, bench vice, etc Electrician: various screwdrivers, electric pens, flat pliers, pointed nose pliers,

China's hardware tools market is mainly distributed in Zhejiang, Jiangsu, Shanghai, Guangdong and Shandong, among which Zhejiang and Guangdong are the most prominent. Zhejiang Yongkang has always been known as the "hometown of hardware," and the Zhejiang people's awareness of market operations is quite strong, from the original hot pot products, stainless steel insulation cups to the popular scooters last year, brought them a rolling fortune. At present, China's daily hardware industry has entered the world. At

Tool boxes are made of many kinds of materials, including plastic ones, injection molding ones and blow molding ones. Purpose Bearing tools, supplies and products

Hardware tools, including various manual, electric, pneumatic, cutting tools, automobile protection tools, agricultural tools, lifting tools, measuring tools, tool machinery, cutting tools, jigs, tools, molds, cutting tools, grinding wheels, drill bits, polishing machines, tool accessories, measuring tools, cutting tools, paint tools, abrasive tools, etc. Most of the electric tools sold in the world are produced and exported from China, and China has become a major supplier of electric tools in the world.

01 First of all, we need to know that a single socket wrench cannot be used, and it can only be used in combination with matching tools. Therefore, we often see socket wrench sets in our life, that is, the tools shown in the figure below 02 What common tools are included in this kit? Generally, there are socket wrenches, socket heads, screwdriver sockets, extension rods, etc; 03