Over the years indirect percussion has been growing, Mostly due to the increased accuracy and control that you get over traditional percussion. This leg strap allows you to attach the indirect ishi stick under your leg, rather than trying to hold it behind your knee. The strap is designed to work with 1" diameter tools. Length is adjustable to accommodate different size knappers. Indirect ishi stick in image for demonstration only and is not included in this kit. Learn why so many knappers are switching to Indirect!