These bottles are produced with quality high temperature resistant materials to with stand the Vigorous use in motorsport applications. The bottle and hoses are designed to allow bleeding of a hot brake system between sessions or stages. Calipers with twin bleed nipples can be bled individually or simultaneously as each bottle is equipped with twin bleed hoses and one way valves to prevent air being drawn back in to the caliper during bleeding. Each hose has a clear section of hose so that any air bubbles can be monitored during the bleeding operation. This hose is then attached to a small bore silicone hose to connect to PFC size bleed nipples but this will also fit standard size nipples as well. The bottle has almost a 1ltr capacity to reduce the need to empty the bottles during bleeding. On the neck of the bottle there is a convenient storage to store bleed hoses and this also acts as a hanger for the bottle during bleeding.