In technical trade, C-items are specifically products from the areas of work safety and operating hygiene, as well as V-belts, ball bearings, electrical materials, tools and attachment technology. All products share having standardised properties: A multiple-area oil 10W-40 always has the same general properties, and welding safety goggles also are always the same in their basic function. The purpose of use as well as the protection purpose are ensured according to DIN. The benefit of these products thus is in their simple classification and easy comparability of different providers of the same product. However, there are, of course, differences in quality and design - and the price. "C-items" are often called "low-value" goods. "Low-value" quickly suggests "negligible" - which is grossly wrong. No operation can make do without C-parts.