Extrema Ratio S.R.L. Via Traversa delle Ripalte,72/78 | 59100 Prato (PO) Italy | P.I.02481870976
Thank you for purchasing an original EXTREMA RATIO knife, made in our company located in Prato, Italy.
Aware of the excellent quality of our knives, EXTREMA RATIO provides a lifetime warranty.
Sheaths come with two years warranty as of the date of the first purchase.
We guarantee a total/partial replacement and/or repair in case of manufacturing defects affecting the functionality of the product or in case of damages caused by manufacturing/material defects.
Damages from an improper use, wear or oxidation, which can be avoided by carrying out regular maintenance, are not covered by the warranty.
Any modification, customization and/or work produced on an EXTREMA RATIO product that may result in a change of its features is considered breach of warranty.
Modifications include repairs and re-sharpenings that are not performed by EXTREMA RATIO and that does not meet the parameters, angles or geometries of the knife.
We suggest visiting our website www.extremaratio.com for the maintenance of your knife.
If the problem is not directly related to manufacturing/material defects, we will suggest a repair, whenever possible, and provide you with a quote.
In the event of confirmed defects covered by the warranty, return shipping costs will not be charged.
Warranty does not cover products purchased from e-commerce platforms where is not possible to identify the source, the reliability of the seller and the authenticity of the knife.
Given the increasing spread of fake and counterfeit products, we suggest you always purchase from an authorized reseller or from www.extremaratio.com.
In the event of a non-original item, which is not covered by the warranty, EXTREMA RATIO reserves the right to withhold it and report it to the relevant authorities.
Each return must be made following these guidelines, failing which warranty will not be provided.
The authorized reseller will be in charge of arranging the return. Please contact them and follow the instructions they will provide you.
– Purchase receipt as of the date of the first purchase
– Detailed description of the problem encountered supported by pictures
We will not accept any returned item that does not meet the above requirements.
Repair time may vary depending on the nature of the problem and it will communicated each time upon confirmation.
All the plastic parts of the knife as handle, hardsheath and belts are produced in polymers with high mechanical and chemical resistance. The metallic accessory components like screws and rivets are produced in metals virtually immune from oxidation. The blade is the partyou mostlyhave to takecare of. These rules must be observed also for the models with the blade protected by superficial coatings, these treatments, in fact, although resistant, tend to wear out during the use,leaving the blade surface bare. The handle, easy to be disassembled, will make these operations easier.
All the plastic and metallic parts except the blade, the closing lever and the tang are produced in materials virtually immune from oxidation. The blade is the partyou mostlyhave to takecare of. These rules must be observed also for the models with the blade protected by superficial coatings, these treatments, in fact, although resistant, tend to wear out during the use,leaving the blade surface bare. We recommend to effect cleaning and lubricationby using wads and brushes without disassembling the knife. Too frequent disassemblies and reassemblies could endanger the quality of assemblies and components.
The knife has to be maintained dry and lubricated (specific synthetic lubricants or lubricants for weapons).
In case the knife gets wet in salty water it is necessary to wash it with fresh-water, wipe it off and lubricate it.
Salty water is the common worst enemy of hardened stainless steel.
In case the knife is stocked for a long time, it is getting wet in fresh-water or/and it is getting dirty by hydro soluble materials like mud: it is enough to wash it with fresh-water, wipe it off and lubricate it.
In case the knife is getting dirtyby fatty materials, it is necessary to clean it with common domestic detersives, wipe it off and lubricate it. Make sure that the interior of the sheath is always clean, dirt often contains some abrasive substance which could scratch the knife’s surface while drawing and drawing back.
In case of wear or break of a part of the knife, it is possible to replace the mentioned part without having to replace the whole knife. The heavily worn out sharpening can be restored by the manufacturer or by a qualified professional knife-sharpener. Parts which are particularly subject towear, can be disassembled and replaced (belts). The replacement of the damaged part can be effected by any gunsmith with standard tools.
The sharpening can be effected with smooth stones and diamond plaques, but we recommend to use quality tools and to conform to the following sharpening tips : Choose the right grain for the kind of sharpening you wish to obtain: a thick grain to remove scratches and damages on the edge, a thin grain to restore the cutting capacity. The essential rule is to let the blade slide on the sharpener obliquely touching the flat of the edge and not the flat of the blade.