Reinforced construction: steel and aluminum body with a CNC-anodized finish for a durable, long-lasting surface that maintains performance under heavy use. Versatile fit system: press blocks with a five-position front for precise headset sizing; hollow back enables crank installation for versatile setups. Non-slip handles: knurled grip design with threaded mounting to prevent shifting; breaks down for compact, easy storage. Guided bearing assembly: bearing ring with a ball interface that provides even pressure; works smoothly with lubricants in the bottom bracket. Use scenarios: - In a professional shop, service a range of frames by ensuring consistent pressure and secure headset and crank installation thanks to the versatile fit system. - At home, quickly switch between headset sizes and disassemble for compact storage while keeping components secure and aligned. - On-site field maintenance for rugged bikes, where durable construction and reliable lubrication compatibility support repeatable, dependable performance during long repair sessions.