Available in 5mm width and 6m length, its high-quality, opaque tape reliably adheres to paper material without any patchiness or wrinkle. Given its dry application, users can write over almost immediately without any risk of the tape gumming up. In-line with Pilot Pen’s eco-friendly initiatives, the White Line Knock R Series is developed with recyclable materials and recognized as an environmentally friendly product, as it proudly bears the Japan Eco Mark . Taking its green efforts a notch higher, the White Line Knock R is also designed with a refillable feature (Refill: ECTRF15K-5L).