NUCLEUS SBX DUMBBELLS. Despite being the entry-level option to the new Escape free weight range, these SBX dumbbells still feature the same patented \'Dual Lock Plus\' process, splined press fit at three tonnes and are full penetration welded. BADGE - 3D embossed micro-injection badge.FIXING - Patented fixing technology.EVOLUTION EDGING - Circle-to-octagon shaping inspires anti-roll confidence.DURABILITY - Permanently-bonded chemlok moulded covering. AVAILABLE WEIGHTS: 2.5-50kg (Pairs - 2.5kg increments).AVAILABLE SETS: 2.5-25kg, 27.5-50kg, 12.5-35kg.