The BKK Viper-41 is a strong 4x treble hook designed with long and straight needle points and a very aggressive bend

Perfect for larger heads and those who enjoy a deeper fitting hat

BKK's Innovative Hand Ground Point technology for razor sharpness and superior penetration

Vary the speed

Siren Tech Mesh w/ Stretch Siren The BKK Viper-41 is aPerformance inspired innovations and Ultra premium comfort features make this cap perfect for any offshore adventure. An elastic mounted D ring and hook and loop backstrap offer a unique, comfortable, and versatile fit. Lightweight fabric with Tech Mesh helps keep you cool and comfortable. Stay Dei Performance sweatband. Adjustable Velcro backstrap with elastic D ring One size fits most.