Screw and bolt set for tendon base

winter swimming and leisurely walks at the beach

so your gear feels better and lasts longer

Adjustable chin strap and back strap for secure fit

STX Cyber 4.0 Boom Surf Hardwear - 1016 Screw and bolt set forSTX Cyber 4. 0 Boom 183244 When Cold Hawaii calls, it's important to have your windsurfing setup in order. The STX Cyber 4. 0 Boom 183244 is designed for windsurfing with a focus on strength and stability. The adjustable length of the boom allows you to adapt the setup to different sail sizes and water conditions. In Cold Hawaii, when conditions are good, reliable equipment means everything. More control. More stability. More time on the water.