DIY supplies: woodworking, stainless steel, plumbingPower: use electric drill. 170mmOperation method:1. Turn on the electric drill2. Connect the electric drill3. Install the auxiliary handle4. It must be turned counterclockwise to the end before inserting the rivet5. Insert the appropriate rivets6. Pull the rivet clockwise7. Pull out the rivet counterclockwise. Color: black + red. the photo a little different from the reality. The measurement allowed error is +/- 1-3cm.