These locking soft grip pliers work well for pen disassembly. The non-marring soft grip securely grasps finished tubes from .35" (slimline) through 1" diameter. The 7" pliers lock and hold your tube securely while you punch out the internal components. They help dislodge the tightest and most difficult to remove components. Great companion to the Pen Disassembly Punch set #PKDISET