The 1421T5BK is a package of 24 black round hemisphere feet in the 1421-FEET Series. Each dome-shaped foot is 0.44 in (11 mm) in diameter and 0.20 in (5 mm) high, and works as a compact bumper foot for small cases, desktop devices and tabletop equipment.

The feet are self-adhesive, using Natural Rubber R-30 adhesive. The part page lists rubber as the material; the series data states the feet are made from polyurethane material, except the 1421T7. The series service temperature rating is -34°C to 66°C (-30°F to 150°F).

For the best bond, follow the manufacturer's guidance:

• Clean surfaces with isopropyl alcohol (rubbing alcohol)
• Apply firm pressure to generate good initial contact
• Adhesion bond will increase over time

The 1421T5BK is RoHS compliant and REACH compliant, with a package shipping weight of 0.03 lbs (0.01 kg). The same hemisphere size is also available in clear as the 1421T5CL, which uses Acrylic A-20 adhesive instead of Natural Rubber R-30. Choose the black 1421T5BK when a dark, rounded bumper foot suits the product. Of the black self-adhesive feet in the series, it has the smallest diameter, next to the 0.47 in square 1421T8BK and the 0.50 in 1421T2 and 1421T3.