A flat grater that can grate not just wasabi, but others like potatoes, carrots and onions.

Manufacturer Model Number: MS-7006 
Size: 5.4 x 3.2 x 3.2 inches (138 x 82mm)
 Weight: 2.6 oz (76 g) 

Materials
Main body: Natural wood
Grater: Stingray leather 
Made in Japan