Most of the holes in panel furniture parts are processed using various types of drill rows, which are divided into single-row drills, multi-row drills, 3-row drills, 6-row drills, etc.

The drill bits are divided into forward and reverse according to the direction of rotation. Remember not to install them in reverse.

The forward and reverse directions are made in red and black. Red represents reverse, usually represented by "L", and black represents forward, usually represented by "R".

Most equipment such as side hole machines, CNC cutting machines, and pistol drills use forward rotation, and the two hidden holes next to the hinge machine generally use reverse rotation. However, there are both forward and reverse rotation on the drill bit machine, so don't make a mistake.