Knurling Inserts Details : We manufacture a wide range of brass inserts, which are available in different outer surfaces like Straight, Diamond and Crossed for better grip in plastic moulding. :: Finish And Coating : Natural, Nickle Plated, Tin Plated or any coating as per customer specification. :: Special Features : Knurled Inserts are used for moulding of Nylon spacers and spillers. They are available in 3 mm to 6 mm in size :: Length / Size : Begins from M2 or equivalent threads and up to any size as per custom design and as per availability.