1.Use in Tight Spaces: The rods provided in our kit are extremely durable, flexible and will bend with little to no effort at all. To use with tight angles, attach the un-threaded part of the extension rods directly to a drill just like you would a regular drill bit. Keep the brushes spinning at a low speed and use steady, easy pressure to help work the brush around the bends in the vent. 2.Protect Family From DisasteR:With over 15,000 dryer fires occurring each year, keep lint and other particles from clogging up your dryer with this dryer vent cleaning kit, avoid overheating the dryer and posing a fire hazard. Help protect the safety of your family and home. 3.Efficient Dryer Lint Brush ;Our dryer vent cleaning kits extremely durable, flexible and will bend with ease. Easy to connect and retract. Can withstand more than 90 degrees of curved pipeline, use or do not use electric drill to rotate with homeopathic needle, quickly & easily clean the dryer vents from inside or outside of your house. 4.Prevent Costly Repairs:This dryer vent brush delivers superior results and helps you prevent costly repairs. It helps prevent dryer fires by regularly removing dangerous lint buildup. educe drying time, while extending the life of your dryer.