This particular hole punch set is for the 22mm hole punch.
USAGE INSTRUCTIONS
STEP 1:
To use this type of hole punch you simply use a drill but such as this stepped drill bit to drill a pilot hole.
STEP 2:
Place bolt through hole.
STEP 3:
Attach die and punch together from punch kit.
STEP 4:
Use ring spanner to tighten bolt.
STEP 5:
Keep tightening the bolt until you hear the click sound of the punch passing through the steel.
STEP 6:
Remove the assembly from the hole and screw the die and punch set apart.
STEP 7:
Throw away the slug
STEP 8:
Admire the perfectly clean hole that you have just made in the sheet metal. No further filing or cleaning up of the hole is required.