The Flute rollerball metal PP is a Rollerball pen in a straight design. Material and surface: Cap and barrel: aluminium anodised. Grip zone: plastic (ABS) matt. Clip: plastic (ABS) matt. Standard colours: Cap and barrel: available in 3 anodised colours. Grip zone: black. Clip: black. Special colours: - Refill: Rollerball refill RO-S (600 - 800 m), blue or black, Refill Optional: