<p> 	&nbsp;</p> <p class="p1"> 	End your hole punching problems! Making the right size hole for the 3 mm transfer barbs that connect to a Tropf Blumat can be a little difficult. This very sharp hole punch not only does that easily but you can also use it for 1/8" and 1/4' connectors. The pointed end unscrews and goes into the handle for safe-keeping.</p>