Balisongs And Caviar A Balisong Collector Special Exhibit T3-X The handle inserts are Mother of Pearl. The screws that hold the inserts into the handles are made by Pabu from brass. Even the special tool used to install the screws was custom-made by Pabu. In fact, everything about this knife was custom-made. The red material behind the Mother of Pearl is Red Micarta. Even the latch is special. This latch allows the blade to run the full-length of the handles achieving the maximum-possible blade length. The latch has a detent on it and there's actually a ball and spring built into the handle. This mechanism holds the latch out straight during manipulation. The latch is also Devon Thomas Damascus Steel.