What is for?Conveyor Roller, Stainless Steel, Galvanized Steel, Grey, Roller length 344 mm, For Industrial.These Conveyor Rollers are technologically advanced and confirm to industrial quality norms of international standard. These Conveyor Rollers are made from very high-quality raw material which ensures hassle free work performance at its user end. Specs:Material = Stainless Steel / Galvanized SteelA = 344 mm, overall lengthB = 278 mmC = 12 mm, diameterD = 4 mmE = 38 mm, overall diameter