Oregon 3/4" pitch sprocket-nose guide bars are built from solid, one piece 3/8" thick alloy steel with precision milled grooves. The rails are chamfered and have chain lead-ins at the bar tail. These bars can be restraightened if bent during cutting mishaps. The patented Cradle sprocket-tooth design results in the critical nose-sprocket area being exceptionally strong and reliable. Nose can be replaced by removing 5 rivets.