The 20" Knurled Dumbbell Handle is a 28mm diameter handle. Best Suited for standard 30mm plates. The knurled grip with fixed inner collars is a key feature. 

Features:

• 28mm diameter
• Suitable for standard 30mm plates
• Chrome plated solid steel bar
• Knurled grip with fixed inner collars
• Spinlock ends to ensure discs remain firmly secured onto bar