Is it 'duct' or 'duck' tape?

For temporary floor marking, removes cleanly up to 3 weeks. Not for hardwood or direct sunlight. Heavy duty- excellent for repairs, crafting

Duck Brand Duck Color Duct Tape, 6-Roll, Baby Pink (240976_C)

Duck Tape brand Duct Tape 20 yd

Duck Brand Transparent Duck Tape @ FindTape

Beige Tan Duck brand Duct Tape 1.88 inch x 20 yds

Basic Strength Utility Duct Tape

Duck Tape® Chrome Duct Tape, 0.75 x 180 in - Kroger

Dinghy Davits with wheels from VersaChock allow for easy manual loading of lighter dinghies onto swim platforms. Davits are removable by simply

Duck Brand Printed Duct Tape [Prints & Patterns]: 1.88 in. x 30 ft. (Brushed Stripes)

Duck 1.88 in. x 10 yds. Mustache Duct Tape 280912 - The Home Depot

Duck Brand Color Duct Tape Rolls 1 1516 x 20 Yd GoldChrome Pack Of 2 Rolls - Office Depot

All Purpose Duck Tape Brand Duct Tape-Silver 1.88 Inch x 60 yd - 394475

Duck Brand Digital Camouflage Printed Duct Tape