Mantis BK-2a Bottleneck Balisong-Style Folding Knife 1.99" Black Double Edge Blade, Bottle Opener

Sale Price:


Our Price: $32.95
Retail Price: $40.00 | You Save: $20.05 (50%)
Part #: MNTBK2A | Mantis Knives
In Stock
Availability limited to stock on hand.
Earn 200 knifeREWARDS Points!
MNTBK2A: BK-2a Bottleneck
Mantis Knives

The introduction of the "Bottleneck Family" was a milestone for the Mantis brand. This series of knives was our first collaboration with Hawk Designs of Idaho City, ID.

Gavin and Grant Hawk have long been friends of the Mantis organization, so it was only natural that we eventually collaborated to bring knife enthusiasts one of the most unique gadgets that the knife-marketplace has ever seen.

The Bottleneck design boasts a bottle opener, butterfly knife which attaches effortlessly to any keyring with it's integral handle/latch configuration.
  • Overall Length: 3.75"
  • Blade Length: 1.99"
  • Cutting Edge: 1.51"
  • Blade Material: 400 Series Stainless
  • Blade Style: Wicked Dual Tip
  • Handle Material: 400 Series Stainless
  • Lock Style: Patented Latch-Lock with integrated handle springs
  • Carry System: Pocket Clip
  • Weight: 3.1 oz.
  • Special Features: Bottle opener can be accessed and used while knife is still attached to keychain,to activate knife... a simple flip of the latch exposes the blade.

UPC Code: 014978050608

Pocket Clip
Pocket Clip
Includes a pocket clip for easy accessibility and a more secure carry.
Steel Handles
Steel Handles
Stainless Steel knife handles provide strength and durability and look and feel great.
3.000 (7 reviews)
3.0 out of 5 stars
5 star
4 star
3 star
2 star
1 star
3 out of 5
Doug T
Kalamazoo, Mi
Dec 18, 2015
Damm small #2
to add to my previous it a STRETCH to call the blade 1.99". That's the entire length of the metal making up the blade, it has a working, cutting length of 1 3/8".
2 out of 5
A. Moore
Dec 17, 2015
Pros: Blade Material, Pocket Clip, None
Cons: Overall Quality, Lock Type, Ease of Opening
Lost Screw
I have always like the Balisong style, so I thought with the sale I would try one of these. If you do the best place for it is in a glass case and not to be used. I used it as it was marketed. The looks are very attractive and the size does make it very easy to add to your key chain. However, within two weeks I lost a main screw and washer holding the closure clasp together and this made the Balisong completely unusable and un-safe. Before this I had used the bottle opener and the Balisong does flex, so much care needs to be exerted when using that feature. The Balisong also features two paper cut outs on either side. I can only assume that is what these cut outs are for, they are too small for seat belts or other items. These features are about as worthless as cutting as board with a screwdriver. One last note, I did drop my keys once and the Balisong came off the ring very easily.
5 out of 5
Paul The Repairman
Santa Fe, NM
May 06, 2011
Pros: Ease of Opening, Overall Quality, Weight, Pocket Clip
Cons: None
My cool new gadget
I've carried a few keychain knives in my adult life, but none of them are as cool as this one. It's legal, its fun and it's a real attention getter. My wife comes to knifecenter to buy me stuff from time to time, i'm happy she found this brand here, great prices!
Read all 7 Reviews »
Loading Reviews


Subscribe to our Newsletter for exclusive offers!