The 1421T9BK is a package of 24 black round feet from the 1421-FEET Series, and at 0.88 in (22 mm) in diameter it has the widest footprint in the series. Each foot is 0.40 in (10 mm) high, giving enclosures, desktop units and tabletop equipment a broad, raised anti-skid base.

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

The manufacturer's recommendations for best adhesion:

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

The 1421T9BK is RoHS compliant and REACH compliant, and the package ships at 0.22 lbs (0.10 kg). It is the tallest of the self-adhesive feet in the series. If you would rather screw the feet on, the 1421T7 is a 0.75 in round screw-on foot; for a large square self-adhesive foot, see the 0.81 in 1421T4.