My newest Vise-Grip is the 4-inch 4WR model. The knurled adjustment knob has a hex recess hole on the rear, marked 3MM HEX (not visible in the photo below). My older Vise-Grips do not have the hex socket. Anyone know why one would use an Allen hex wrench instead of fingers to adjust this Vise-Grip?A small split ring placed around the adjustment bolt serves at a lanyard attachment point.The Vise-Grip 4WR is shown in the photo between a stainless Pocketwrench II and Victorinox Spirit for size comparison.(Image removed from quote.)
Anyone know why one would use an Allen hex wrench instead of fingers to adjust this Vise-Grip?