Oil slick polished precision milled black zirconium knife scale for the xm-18 3.5 hinderer. This scale is for the show side as the other side is the factory hinderer frame. There are several other designs you can order at my store (you can see the brushed grooved ti scale installed on some of the pictures). Ask for pricing if you also want to get the scale installed on a xm18 3.5 hinderer folding knife. Black zirconium: pure zirconium (zr atomic number 40) is a lustrous, grey-white, very strong, lightweight and hypoallergenic metal that closely resembles hafnium and, to a lesser extent, titanium. Zirconium is extremely resistant to heat and corrosion and it is lighter than steel. Through my own heating process, i create a unique appearance, that’s called black zirconium. Through this high heat, a layer of extremely hard black oxide grows on the metal. This thin black layer is much harder than pure zirconium, which does not rub off over time from your meton-vault. Therefore, it is more durable than black-coated items, such as black tungsten and titanium. This black color is permanent, it does not fade, tarnish, or change color. One free gift per address. The following items do not qualify: discounted items, including 2 for 1 offers and items on sale or if paid with a discount coupon. Also do not qualify for the free item: any orders with knife installation (as i get these knives at retail price) and custom orders not listed in my etsy store. Collectible: can be passed down from generations to generations. A perfect gift for you and your loved ones. Precision: each metonboss knife scale is precision cnc machined from a solid zirconium billet in my anaheim manufacturing facility in california, usa. Once machined, it is carefully quality checked by my quality personnel. P r o c e s s i n g t i m e. A b o u t m e t o n b o s s. M o r e f r o m m e t o n b o s s. Spinning worry coins. F o l l o w u s. We appreciate your support and love for metonboss edc products, including knife lanyard beads, sak scales, meton-vaults (pill boxes, stash containers), worry coins, spinning tops, spinning coins and spin bases. This item is made of stainless steel and zirconium.