Use the cutting tool to snip off the end of (or open) a
new tube of caulk.
Use the thin metal rod to puncture the seal inside a new
cylinder of caulk.
Put the cylinder of caulk in the caulk gun and use the
trigger to pump caulk onto the surface of the project
where desired.
Applying caulk in this way is called laying a bead of
caulk. When the bead is in place, use a damp rag to smooth
out the surface of the caulk and bond it to the project
Use the cutting tool to snip off the end of (or open) a
new tube of caulk. 
Use the thin metal rod to puncture the seal inside a new
cylinder of caulk. 
Put the cylinder of caulk in the caulk gun and use the
trigger to pump caulk onto the surface of the project
where desired. 
Applying caulk in this way is called laying a bead of
caulk. When the bead is in place, use a damp rag to smooth
out the surface of the caulk and bond it to the project
