The Orbit Z Internal Deep Cup Headset from FSA is engineered for reliable steering performance on bikes requiring an internal headset. It features deep, forged alloy cups designed for a secure fit in 50mm OD head tubes, paired with a 1-1/8" steerer tube. This headset ensures smooth, precise handling thanks to its angular contact bearings.Built for durability and a clean aesthetic, this headset combines robust construction with a low-profile alloy top cover. It's a solid choice for riders looking for a dependable internal headset solution.## Features* Designed with deeper forged alloy cups for optimal fit* Equipped with 36°/45° angular contact bearings (black seal) for smooth operation* Includes an alloy top cover for a sleek finish## Specs* Head Tube Compatibility: 50mm OD* Steerer Compatibility: 1-1/8"* Bearing Type: 36°/45° ACB (Angular Contact Bearing)* Stack Height: 20.1mm (16.9mm upper + 3.2mm lower)* Weight: 88.6 grams