Specification Brand : Renegade Blade BulletPoint1 : 2pk--8"--(1) 44t green VIPER & (1) 56t red RAZOR -- COMBO 2 Blade HYBRID Pack--RENEGADE BLADE - Carbide Brush Cutter weed eater Blades - 203mm diameter BulletPoint2 : BLADE ATTACHMENT PARTS: Our blades are "Universal Fit" provided you FIRST acquire "Blade Kit" parts for your Trimmer model, (we don't sell these parts). IMPORTANT>> A blade does {NOT} fit directly on the tiny 5/16" axle that the "String Spool" screws onto, ALL string trimmers require some type of blade mounting parts (normally 2 small discs, nut, and cotter pin) to run a blade (YouTube can show this). We offer TWO arbor sizes: 25.4mm (same as 1") & also 20.0mm with reducer washer. BulletPoint3 : CARBIDE -- is estimated to last 10x longer than plain steel but does not cost 10x more creating incredible value. The CARBIDE MIX in our teeth is proprietary and 2nd to none. We use the most expensive highest "COBALT" content YG8 teeth in our Hybrid Blades. BulletPoint4 : SIX BLADE TYPES -- All 6 specialty types of blades we offer are as follows: (1) RSB. thick tree limbs thick brush: 8-80t, 9-100t, 10-120t... (2) Yellow TALON Hybrid, thick tree limbs & hard brush: 8-72t, 9-84t, 10-96t... (3) Red RAZOR Hybrid, medium limbs & thick bushes: 8-56t, 9-68t, 10-80t... (4) Green VIPER Hybrid, small limbs - brush & brambles: 8-44t, 9-48t, 10-52t... (5) RSB, brush & brambles: 8-32t, 9-36t, 10-40t... (6) Blue HAWK Hybrid, brush only: 8-20t, 9-20t,10-20t BulletPoint5 : RENEGADE BLADE is the ONLY Carbide Brush Blade BRAND on Amazon that has a {REPORT} from the foremost Testing Laboratory: UL, LLC. Color : Red CompatibleMaterial : Wood CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier : 7391883052440 ExternallyAssignedProductIdentifier1 : 646341822675 ExternallyAssignedProductIdentifier2 : 0646341822675 ExternallyAssignedProductIdentifier3 : 00088381458214 GpsrSafetyAttestation : 1 Hazmat1 : ENGINE, INTERNAL COMBUSTION, FLAMMABLE LIQUID POWERED Hazmat10 : EG_NoAir Hazmat11 : ES_NoAir Hazmat12 : FR_NoAir Hazmat13 : GB_NoAir Hazmat14 : IN_NoAir Hazmat15 : IT_NoAir Hazmat16 : JP_NoAir Hazmat17 : MX_NoAir Hazmat18 : NL_NoAir Hazmat19 : PL_NoAir Hazmat2 : UN3528 Hazmat20 : SA_NoAir Hazmat21 : SE_NoAir Hazmat22 : SG_NoAir Hazmat23 : TR_NoAir Hazmat24 : US_NoAir Hazmat25 : ZA_NoAir Hazmat26 : 3 Hazmat3 : AE_NoAir Hazmat4 : AU_NoAir Hazmat5 : BE_NoAir Hazmat6 : BR_NoAir Hazmat7 : CA_NoAir Hazmat8 : CN_NoAir Hazmat9 : DE_NoAir IsAssemblyRequired : 1 IsCordless : 1 ItemDisplayDimensions_Height : 4 inches ItemDisplayWeight : 16 ounces ItemName : 2pk-8"-Combo Pack - (1) 44 Teeth Viper & (1) 56 Teeth Razor - Hybrid Pack - RENEGADE BLADE® - Carbide Brush Cutter Weed Eater Blades - 203mm Diameter ItemPackageDimensions_Height : 8.382 centimeters ItemPackageDimensions_Length : 40.894 centimeters ItemPackageDimensions_Width : 28.194 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : string-trimmer-attachments Manufacturer : Renegade Blade Material : Titanium Carbide ModelName : PA1100 ModelNumber : 2pack-8inch-COMBO--44t Viper--56t Razor NumberOfBoxes : 1 NumberOfItems : 1 NumberOfTeeth : 56 PackageLevel : unit PartNumber : 2pack-8inch-COMBO--44t Viper--56t Razor PowerSourceType : AC ProductDescription : (1)---UNIVERSAL FIT -- each of our blades will fit either 25.4mm Arbor (same as 1”) or a 20mm Arbor with included “reducer washer” with YOUR "Blade Hardware". (2)--- IMPORTANT |BLADE HARDWARE: A Blade will {not} fit onto the Trimmer Axel Shaft by itself like the String Line Dispenser Spool will, so you must acquire "Blade Hardware" (mounting adapter kit or parts) that consists typically of two small discs; one has a raised circle on it that the blade hole (arbor) fits onto, the 2nd small disc is the cap disc, then screw on the Nut and apply a Cotter Pin. Sorry, we DO NOT supply blade hardware. (3)--- CARBIDE MIX in our teeth is proprietary and 2nd to none. Just Tungsten is not enough; additives like: Hafnium, Tantalum, Titanium, Molybdenum, Silicone, Zirconium, Boron, Niobium, Chromium, & Vanadium, make for a better Carbide Mix for longer lasting teeth. (4)--- ULTRA HIGH RPM: Our blade is built for any RPM even super high RPM Trimmers (10,000+ rpm). Manufactured with a more flexible steel as compared to the much more brittle steel found with table saw blades (table saw blades can shatter if they hit an obstacle, plus they are only built for approx. 3,450 rpm so they should never be used with gasoline powered Garden Trimmers. (5)--- RENEGADE BLADE is the ONLY Carbide Brush Blade BRAND on AMAZON that has a {REPORT} from the foremost Testing Laboratory: UL, LLC. (6)--- CHOOSING THE CORRECT BLADE: Blades line up on a polarity scale with maximum TEETH on one end [for CUT] all the way to maximum CAVITIES [for GRAB] on the other end. EXAMPLE: Wood tree limbs require more teeth and no cavities, and wispy flexible brush or grass requires maximum grab as teeth alone just pushes grass over without cutting. THEREFORE: You must pick a {Teeth & Cavity Pattern} that best suits your material being cut. We offer blades to handle any: Wood, Bushes, Brambles, Hedging, Brush & Grass. ProductExpirationType : Does Not Expire ProductSiteLaunchDate : 2016-02-08T08:00:00.000Z StreetDate : 2017-03-02T00:00:01Z Style : Industrial SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 53131603 Wattage : 80 watts