Hydraulic filler breathers with dipsticks are components used in hydraulic systems to check the fluid level and ensure cleanliness. They consist of a breather cap with a built-in dipstick. The breather cap allows air to enter and exit the reservoir, preventing pressure buildup, while the dipstick enables users to easily measure the fluid level. Think of it like checking the oil level in your car's engine with a dipstick. Hydraulic filler breathers with dipsticks help operators monitor fluid levels and ensure that the hydraulic system has enough clean fluid for proper operation, promoting efficiency and preventing damage to the equipment.