gold tool fancy v slot bench pin and clamp 
this bench pin comes notched and ready to use.
 it includes a keyhole v-slot, indents and ring-holding extension with sawing slot. 
use the recessed oval areas across the middle of the pin to hold components,
 sizing stock or trimmings while you work,
 slip the l-bracket (included) through the hole at the back of the bench pin and into the recessed area; 
then slide the bracket onto your work surface and tighten the clamp.