SlickTrick 85 Grain Alcatraz Bladelock Broadhead. Real Field Point Flight. Huge 4 blade hole, great penetration, 100% steel strength Alcatraz Bladelock. The "slick trick" is the patented Alcatraz Bladelock design. No other broadhead in the world has the blades completely interlocked inside the ferrule like the SlickTrick. this design breakthrough perfects the geometry of an aerodynamic 1 piece STEEL ferrule with 4 imprisoned aerodynamic razor sharp .035" stainless steel blades for the best combination of accuracy, strength, penetration, hemorrhage, and reliabliilty on the market. 3 per Pack. SlickTrick 85 Grain Alcatraz Bladelock Broadhead.