https://youtu.be/RYapWv7nWZM

For professional installation of handles and knobs, ideal for doors and drawer fronts. An invaluable tool for any cabinet installer.
Versatile for mounting single and multi-hole knobs.
Distances between centers 16 mm, maximum handle size 512 mm, without extension cords maximum 160 mm. The drill size is 5 mm.

Screws M4 50 mm - 2 pcs, 35 mm - 2 pcs, 25 mm -2 pcs
bearings 625zz - 4 pcs or bearings 624zz - 4 pcs

!!!! Extension_Right = Extension_left.stl + mirror reflection in 3d Slicer