The LDI Replacement Brushes are direct replacements for shank or valve brushes and manual or electric chain oiler brushes. These three styles meet any lubrication requirement. The round brush is an all-in-one brush and holder unit. The flat brush is available as a flat strip only or complete with brush and holder. Brushes are interchangeable, but if the style is changed from round to flat for instance, the flat brush with holder should be ordered, since the holder is an integral part of the brush. Temperature Ratings: Nylon maximum working temperature up to 250°F (121°C) For temperatures over 250°F (121°C), please specify stainless steel