What happens when riders want unparalleled construction and performance? They start making scooter parts themselves. Introducing Phase Two, designed, developed, and tested by some of the best riders in the world. Whether you re a pro or amateur with the Razor Phase Two accessories, riders can build and fully customize your own unique Pro scooter to their specifications. Transform your pro scooter the way you ve always wanted Razor Phase Two Pro Series Quad Coffin Head Clamp is competition ready with four head bolts for maximum security and durability that only the most experienced pro riders deserve. Built from lightweight CNC machined 6061 aircraft-grade aluminum. Features Laser engraved Razor buzz logo on two stylish colors: red or blue. Each sold separately. HIC (hidden internal compression) compatible with all 35mm (1 3/8) outer diameter handlebars including: Pro X, Pro XX, Pro XXX, Black label 2.0, Black label 3.0, and Phase Two Scooters.