Our Custom “3 in 1” Clevis is the key feature on our Apache Triple Blade Bucktails. Not only does it keep the 3 blades spinning in synch, they also create a unique grind and squeal sound that no other Bucktail on the market has. This sound is a major factor in what makes the Apache so effective.The Triple Bladed Apaches perform best at medium to ultra fast(burning) speed. They actually pull less than a double bladed bucktail, so they will not wear you out when burning all day!