For cleaning finned radiators, this brush is ideal because it is extremely flexible, allowing it to get under windowsills and into the tightest spaces. The soft black goat hair fits into the narrowest grooves of the cover, so there is no need to unscrew the radiator cover. The grain coating protects the radiator from scratches. Its stainless steel wire coil returns to its original shape in a flexible manner. Length of the coating: 30 cm, total length of the brush: 100 cm.