Review on Efficient 110V/250W Deluxe Tire Grooving Iron Tool for Superior Results by Bill Pool

no complaints. I've watched a few YouTube videos about grooving and siping, I was a little worried about ruining the hoops and grooving too deep. I used a needle to feel the depth of the steel radials to make sure there was enough rubber left when adjusting the height. I measured the grooves and bought the right knife. The tool cut through cold 30 degree tires like butter, I was able to re-shoulder my lead tires, reverse the blade and sipe the tread blocks which had a huge impact on performance. tires in snow and mud.