Very easy to replace. A bit pricey considering how much you get for a new vacuum cleaner but still better than replacing my paint with another brand that isn't as good. I've had my Dyson 25 for 6 or 7 years. I only had to replace this part because we lost the screw part and instead of finding a new one we just put the part back in. After 2 years his teeth wore out and I had to replace the head. Works great again.