1: Here are two General Tools Swivel Head pin vises. The one
on the right has been disassembled to show the collar, body,
and swivel head (center) as well as the two double-ended col-
lets (top).
1
double-ended, reversible collets which are stored in the body
of the pin vise. This provides four different sized collets in a
single tool. This lets you use it with drill bits ranging from a No.
80 to an 1/8”.
While the four collets in a single pin vise is an advantage, the
design also has a downside. One collet has the largest collet
on one end and the smallest one on the opposite end. This
means that as you switch from a small drill bit to one a little
larger, you must unscrew the collar, remove the collet, and
then remove the swivel head and retrieve the larger collet, and
then swap out the two collets. Many times it seems that you
disassemble the tool and select a particular collet only to find
a minute later that it is either too large or too small for the drill
bit you need.
