On The Run OTR.970 Hard to Buff - 120ml Ink Refill

  • £8.99
Item is in Stock | • Usually dispatched within 24 hours

The OTR.970 Hard to Buff features 120ml of ultra permanent, highly pigmented, alcohol-based deep black ink. It is strongly resistant to heat, smudging, scratching, and UV rays. The OTR.970 was designed to be used with your favorite ink markers, pump-action valve markers, brushes, airbrushes, mop or squeezer markers.

Includes a OTR Refiller Tool cap so you can easily refill your markers without any mess!

•  Alcohol-based 
•  Contains 120ml of Hard to Buff Deep Black ink
•  UV-, scratch-, smudge-, and heat resistant
•  Highly pigmented & opaque
•  Weatherproof
•  Permanent
•  Xylene free
•  For all purposes


All delivery options, costs and estimated delivery dates are available at checkout.

If your order is placed by 1pm (Monday - Friday, excluding Bank Holidays) we can offer a scheduled next working day delivery - via DPD Express (UK only, not including extended area destinations). 

Please place your order by 1pm to allow us time to prepare your order for dispatch at 3pm, and choose an appropriate shipping method at checkout (estimated delivery dates will be displayed at this point - you may need to choose the express shipping option).

Orders which are received after 1pm and outside of working hours cannot be dispatched until the next working day.


You can return any unused items for a full refund of the item price within 14 days of receiving the item. Upon receipt, a refund will be issued within 48 hours. 

After 14 days, if the item/s are not faulty or sent in error and you wish to return / exchange them, there will be a 5% restocking fee. 

If more than 30 days have passed since your order was received then the items can no longer be returned to us.

These terms do not apply to DVDs where the outermost seal/wrapping has been broken and do not apply to books or magazines.

We accept all major credit and debit cards as well as PayPal & Amazon Pay.

We take online security very seriously and to ensure we provide you with a safe and secure environment we also provide the Norton Shopping Guarantee free of charge.  

We do not hold or record any sensitive information such as your card details to ensure we are PCI Compliant.

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