The ASP D2 Test (Inert) Twin Pak Insert for Metro Defender (ASP part no. 55113) is a replacement insert for ASP D2-size Defenders, the size formerly sold as the Key Defender insert. This Twin Pak holds two Test inserts filled with a harmless, inert aerosol. That is enough to practice, then check function again later.

Key Specifications

• This listing is a Twin Pak of two Test (inert) inserts, for repeated practice sessions.
• The formulation is a harmless, inert aerosol, made for practicing with your Defender without any active OC.
• The insert is precision machined from aerospace aluminum and solid brass and is O-ring sealed like the Heat insert.
• It uses the specially produced valve system and patented dispensing mechanism that ASP describes for its Defender inserts.
• It is compatible with Metro D2 and Sport D2 Defenders, and the older Key Defender takes the same insert size.

Frequently Asked Questions

How many inserts come in the Twin Pak? Two Test (inert) inserts for ASP D2 Defenders.

Is a Test insert safe to practice with? ASP describes its Test inserts as containing a harmless, inert aerosol, and highly recommends practicing with them before carrying the active D2 insert.

Does it fit the Key Defender? Yes. The original Key Defender was renamed the Metro Defender D2, and the insert size is unchanged.

Buy the ASP D2 Test (Inert) Twin Pak Insert for Metro Defender

Two Test inserts stretch practice time before you load a live one. Order the Twin Pak from our Lubbock, Texas gun shop for fast shipping, and browse our other pepper spray and OC listings.