This is an octagonal Wa Style Handle made for Japanese style kitchen knives.

The body is made with claro walnut  and horn 

Suited for a 165-210 mm  gyuto or other Japanese knife.

Weight 40f Length 132 mm   (5 1/8”)

Handle is buffed and sealed 

Use and care - Hand wash and dry - Never put in dishwasher nor leave in hot soapy water.