10 piece kit. Clean vents up to 12". Includes (4) 36" long flexible rods that screw together to reach into dryer vents; self feeding 4" auger brush makes multiple turns in your vent; blockage removal tool removes heavy blockages, and clears gutters and downspouts; large 2.5" diameter lint brush with 42" reach; vacuum adaptor to connect to a shop vac or blower vac to remove lint while rotary brushing. Reduces risk of fire and increases the life of your dryer.