https://youtu.be/RYapWv7nWZM Stl model - https://www.thingiverse.com/thing:4473286For 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.Attachment 14643Attachment 14644