Read right dust-free duster, rr3760, 5″ extension wand, 10 oz., 6/pk all-purpose, economical gas duster safely removes lint and dust from keyboards, computers and other office machines. Formula is 100 percent ozone-safe. Duster is equipped with a 5″ extension wand to get to hard-to-reach places. Duster also contains bitterant to discourage inhalant abuse. this product arrives to most customers in 2-3 business days.