This is an original replacement part manufactured for use with Hitachi drill drivers. The special self-tapping screw is commonly used to fasten the two halves of the motor housing. This screw is used with several different models and can have multiple applications. The screw is sold individually, please see model diagram for associative parts.
It is a genuine replacement part that is supplied by original tool manufacturer for use with Hitachi cordless impact drivers. This hook allows a user to secure the tool on the belt for easy access. It is made of durable metal and it is sold individually, please note the hardware to secure it is sold separately.