Product Comparison: DX330 Knife vs. Rapid Response 3.90

DX330 Knife vs. Rapid Response 3.90

To the untrained eye, today’s product comparison may seem silly. Both of our featured products, the DX330 knife and the Rapid Response 3.90 knife, feature smooth blade-assist opening technology, and both are constructed with high-quality stainless steel and handle materials. However, for those who rely on knives in their work, or while hunting, the details about each knife, as outlined below, really do matter. For instance, rescue personnel who are constantly in motion while on the job will appreciate the DX330’s deep-carry pocket clip, which will keep the blade securely in one’s pocket. Read on to discover the differences between these two knives.

DX330 Knife

Rapid Response 3.90/RX322

Blade Length 3.25 inches 3.9 inches
Overall Length 8.12 inches 8.75 inches
Weight 4.2 ounces 4.8 ounces
Pocket Clip Yes; deep-carry pocket clip Yes; ambidextrous pocket clip
Partially Serrated Blade Yes Yes
Glass Breaker Yes No
Seatbelt Cutter Yes No
Handle Material Aluminum Nylon
Blade Locking Technology Liner Lock keeps blade closed when not in use, and Double Lock keeps blade open when in use, even if Liner Lock is inadvertently disengaged. Liner Lock keeps blade closed when not in use, and Max-Lock keeps blade open when in use, even if Liner Lock is inadvertently disengaged.
Thumb Studs On both sides of handle, for ambidextrous comfort when opening blade. On both sides of handle, for ambidextrous comfort when opening blade.
Blade Material 7CR17 stainless steel 5Cr15Mov stainless steel
Backed by Coast’s Lifetime Guarantee Yes; guaranteed against defects in materials and workmanship. Yes; guaranteed against defects in materials and workmanship.

Overall, the DX330 may be the better choice for rescue workers, as it includes tools to break open car windows and cut away safety belts. On the other hand, the Rapid Response 3.90 may be the preference of hunters and knife aficionados, as it was created by legendary knife designer Ron Lake for smooth, safe operation, even in less-than-ideal conditions.

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