The ASP D2 Heat (OC) Twin Pak Insert for Metro Defender (ASP part no. 55112) is a replacement insert for ASP D2-size Defenders, the size formerly sold as the Key Defender insert. This Twin Pak is two Heat (OC) inserts, so you have a spare ready when the first one is used or reaches its change date. ASP packs them with the same maximum-strength, law-enforcement-grade OC formula.

Key Specifications

• This listing is a Twin Pak of two Heat (OC) inserts, giving you a spare for one reload.
• The formulation is 10% oleoresin capsicum with 1.4% major capsaicinoids, rated by ASP at two million Scoville Heat Units.
• Heat inserts include invisible UV dye, added for 2024 to help law enforcement identify an assailant.
• Each insert is date-coded so you know when to replace it, and ASP asks that expired inserts be disposed of under local environmental rules.
• The insert is precision machined from aerospace aluminum and solid brass with a specially produced valve system and patented dispensing mechanism.
• It is compatible with Metro D2 and Sport D2 Defenders, and the older Key Defender takes the same insert size.

Frequently Asked Questions

What is in the Twin Pak? Two Heat (OC) inserts for ASP D2 Defenders.

Will these fit my Defender? They are compatible with ASP Metro D2 Defenders and Sport D2 Defenders, and with the original Key Defender, whose insert size is unchanged.

Do the Heat inserts include UV dye? Yes. ASP added invisible UV dye to Heat inserts in 2024 to assist law enforcement in assailant identification.

Buy the ASP D2 Heat (OC) Twin Pak Insert for Metro Defender

Two inserts means one stays in reserve. Order the Twin Pak from our Lubbock, Texas gun shop for fast shipping, and browse more pepper spray and OC listings while you are here.