Badminton racquet, has frame with inner through-holes arranged within protrusions formed on inner annular surface of frame

摘要

The racquet has a frame with multiple protrusions formed in an inner annular surface of the frame. Multiple pins have a body section extending through an outer through hole in the frame and an inner through hole in the frame, and a head section which extends from an end of the body section and rest on the outer surface of the frame, and an axial hole for stringing. The inner through holes are arranged within the protrusions.