Review on MENSI 4 Pack Flint Spark Torch Igniter - Reliable Single Flint Spark Lighter for Effortless Propane Torch Lighting with Bonus 10pcs Flints by Brett Islam

Round ribbed locking bar has too rough, deep and uneven grooves. You can get a spark, but the action is unpredictable at best and the flints wear out incredibly quickly. The flint jams, trying to arc over a straight round striker. You are forced to flex and adjust your arms yourself so that the flint follows a path through the center of the striker. If the lane doesn't start in the middle, to start it, the flint must climb along the edge of the round baton and perform a bizarre action. A higher quality firing pin will have flat bars which produce more sparks with less flint wear due to a better groove, lower contact pressure and smoother running.