*Our nuts have built-in silicone pads to boost friction and prevent loosening; apply extra pressure when tightening to ensure full seating. Perfectly Compatible with Square Weights: About 88% of lifters with square dumbbells struggle to find the right rack; Crostice's weight rack holds a full set of 5lb to 30lb square dumbbellsno more size headaches over troublesome choosing Ergonomic Semi-Round Edge: Choosing the correct rack stand is important; our curved slot corners ensure a smooth re-racking experience, allowing you to effortlessly slide in weights; no more pinching in the fingers! Your hands deserve the best care Extra Space at Bottom for Neoprene: This weight tree rack offers ample space for organizing various dumbbells, including neoprene and kettlebells; enjoy a neat and tidy gym with all essentials impeccably arranged Safe & Sturdy: Crostice's weight storage rack ensures unmatched durability and stability; anti-skid rubber feet prevent scratches an