The Natural Flat Pastry Brush is constructed of natural boar hair bristles heat-sealed into a durable and rivet-less Exoglass handle, designed for years of consistent and hygienic use in commercial kitchen environments. Natural hair bristles retain fluids and evenly distribute them when basting, brushing, egg-washing, and more. Sealed handle and collar prevents bacteria buildup and secures bristles from deforming or falling out. Handle’s convenient hole at base allows for easy storage and drying. Temperature resistant to 482°F and dishwasher safe. Please note: To limit the loss of bristles, hydrate the brush by submerging it in lukewarm water for 1 hour before first use.