180 degrees. Trap + Lock. Grabs dust in tight spaces. Score mark is in darkest color - usually black. Please see details below. Fiber trap dust. Locking technology holds the dust in. Good Housekeeping: Since 1909. Limited warranty to consumers. Replacement or refund if defective. swiffer.com. www.pg.com. Questions? 1-800-214-8734. Visit: swiffer.com. Try: Swiffer Dusters Heavy Duty. 2x more trap + lock fibers (vs. Swiffer Dusters). Assembled in: From domestic and foreign materials.