Description
Brass bolsters wrapped around dark kamagong wood, with a broad squared off blade that ends in a blunt angled tip.
| Overall length | 9.1 inches |
| Blade length | 4.4 inches |
| Handle length | 4.7 inches |
| Steel | High carbon steel |
| Hardness | 58–60 HRC, oil tempered |
| Handle | – Brass with Kamagong Wood Inserts |
Built around: the handle. Brass and dense tropical hardwood is the traditional Filipino combination, and it gives this knife a weight and a warmth that stainless framed balisongs do not have.
Brass costs you and pays you
Brass is roughly ten percent denser than steel, so a brass framed handle swings heavier and carries more momentum through a rotation. Experienced flippers usually read that as quality; beginners often read it as hard work. It is genuinely more tiring over a long session. Brass is also soft. It marks where a stainless bolster would shrug, and after a year of pocket carry the corners will be rounded and the surface will be covered in small bright scratches under a brown tarnish. Some owners polish it back monthly. Others let it go and end up with something that looks like it has been in the family. Neither is wrong.
Kamagong and dry air
Kamagong is a Philippine ebony, extremely dense and naturally very dark, heavy enough that it barely floats. Dense timber like this moves less than open grained wood but it is not immune, and the enemy is dry heat rather than damp. A radiator, a car dashboard or a sunny windowsill will pull moisture out and can open a hairline gap at the brass. Store it somewhere ordinary and it will outlast you. Our own records name the wood two different ways across the listing, so treat the species line as the table gives it.
That blade shape
The tip is squared and angled rather than pointed, which is characteristic of older working balisongs. It is a poor piercing shape and a very good slicing one, and it is much harder to injure yourself with during a failed catch. Its surface is plain, bright steel with no figure in it. For how the pivots, channels and latch actually go together, see balisong construction explained, and the cleaning guide covers getting grit out of a channel. A close relative with horn instead of wood is the brass and buffalo horn balisong.
Quick answers
Will the brass turn my hand green? Occasionally, on damp skin. It washes off and it is harmless.
Is the wood finished? Sanded and buffed, not lacquered.
How long before the brass goes dark? Three to six months of regular carry, faster in summer. Sealed in a case it can stay bright for years.
Model: BMK-421







Elijah –
Nice knife really fun to flip, it’s razor sharp. The only problem I have is that the handles are switched and it took awhile for the knife to loosen up and flip properly overall great knife and would recommend
Liam K. (verified owner) –
I’m impressed with the meticulous attention to detail on the steel butterfly knife I received from this shop. It’s not just a tool; it’s a piece of art that I’m proud to own.
Emily K. (verified owner) –
The steel butterfly knife I received from this store is visually captivating and incredibly functional. It’s now my primary tool for various tasks. Highly recommended!
Benjamin D. (verified owner) –
This shop is a hidden treasure for knife enthusiasts. The butterfly knife I obtained here is a testament to quality and craftsmanship. It has quickly become one of my prized possessions.
Mia M. (verified owner) –
I recently added a steel butterfly knife from this shop to my collection, and it’s quickly become one of my most cherished pieces. The design and quality are exceptional.