The ASP D1 Defender Heat and Test Insert Twin Pak (ASP part no. 54914) pairs one active Heat (OC) insert with one inert Test insert for the Metro D1 and Sport D1 Defenders. ASP previously sold this combination under the Palm Defender name. The Test insert lets you practice the full activation sequence with a harmless aerosol, while the Heat insert is the one you carry. It is a sensible way to learn the device before you rely on it.

Key Specifications

• The insert is compatible with Metro D1 and Sport D1 Defenders, the two ASP models that use this size.
• The pack contains one Heat (OC) insert and one Test insert, covering both carry and practice.
• The Heat insert is 10% oleoresin capsicum with 1.4% major capsaicinoids, rated by ASP at two million Scoville Heat Units.
• The Test insert contains a harmless inert aerosol and is intended for practice and function testing.
• Each insert holds approximately six half-second bursts, enough to practice the activation sequence or cover a real discharge.
• Each insert is machined from aerospace aluminum and solid brass and has a specially produced valve system and patented dispensing mechanism.
• The Heat insert is date-coded, and ASP says to replace it once the marked date has passed.

Frequently Asked Questions

What is the difference between the Heat and Test inserts? The Heat insert is the active OC formulation, and the Test insert contains a harmless inert aerosol for practice. Both fit the same Defenders.

Which Defenders does the Twin Pak fit? It fits the ASP Metro D1 and Sport D1 Defenders, which includes the model ASP formerly called the Palm Defender.

How many bursts does each insert hold? ASP lists approximately six half-second bursts for a D1 insert.

Buy the ASP D1 Defender Heat and Test Insert Twin Pak

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