Drill guide
The one piece drill guide, Style #NK8310, is made of hardened steel and is approximately 95mm in length and 19mm in diameter with a 12mm diameter hole to fit a drill bit (imported separately).
It is designed to be used with the Pocket-Hole Machine, Item #DB210.
The drill guide’s primary function is said to be to guide a drill bit into a piece of wood in order to drill a pocket hole. The drill guide and drill bit are placed into the base of the
Pocket-Hole Machine. When the user pushes down on the machine’s handle, a 12mm diameter pocket hole is drilled into a piece of wood as the drill bit is pushed
through the drill guide into the wood. While the Pocket-Hole Machine is sold with a drill guide already attached, these drill guides are being imported separately as replacement parts.
Subheading HS: 8466.10 (for Style #NK8310)
Source: https://rulings.cbp.gov/index.asp, July 13, 2017 (N287270)