FatMax Aluminum
From Retrobike Wiki

FatMax (left) & BigChamp
Very durable and light box fork by Miyata. 6000 aluminum blades, crown and ends. Blades bonded to ends and crown using Miyata's strong Aluminum Pressurized Adhesive (APA) method. Revited alloy cantiboss sockets.
Tracks well and enables precise handling. Quite good shock absorbtion qualities.
Weight = 745 gram
Shown fork belongs to the 1993 Koga-Miyata SkyRunner.