Specification Brand : PRIME-LINE BulletPoint1 : Used on a wide variety of 3/4 inch to 1-3/8 inch thick sliding closet/wardrobe doors. BulletPoint2 : 1/4 inch wide x 7/8 inch diameter FLAT roller BulletPoint3 : Nylon FLAT guide wheel on stamped steel adjustable guide BulletPoint4 : Features a 1/16 inch offset BulletPoint5 : Features a 1/16 inch offset BulletPoint6 : Factory sealed package has all the necessary mounting hardware is included for a complete installation BulletPoint7 : Please refer to the line art drawing and compare with your original item before purchasing ( Not Universal) Color : Mill ExteriorFinish : Black ExternallyAssignedProductIdentifier1 : 049793068408 ExternallyAssignedProductIdentifier2 : 0049793068408 ExternallyAssignedProductIdentifier3 : 00049793068408 FinishType : Mill IncludedComponents : Sliding closet door roller assembly ItemName : Prime-Line N 6840 7/8 in. Nylon, Flat Closet Door Roller, for Sliding Doors (2 Pack) ItemPackageDimensions_Height : 16.3 centimeters ItemPackageDimensions_Length : 1.6 centimeters ItemPackageDimensions_Width : 9.6 centimeters ItemPackageQuantity : 1 ItemShape : T-Shaped ItemTypeKeyword : sliding-door-hardware ItemTypeName : Sliding closet door roller assembly LockType : Key Lock Manufacturer : Prime-Line Products Material : Plastic MetalType : Alloy Steel ModelName : 7/8 in., Nylon, Flat Closet Door Roller, Johnson (2-Pack) ModelNumber : N 6840 NumberOfBoxes : 1 NumberOfItems : 2 PackageLevel : unit PartNumber : N 6840 ProductDescription : 1. CEMENTED CARBIDE MATERIAL: The drill bit is made of premium TCT cemented carbide (cemented carbide cutting head) and ti plated cemented carbide teeth, ensuring its high hardness, rust prevention, and durability. 2. 3 BLADE DESIGN: TCT hole saw adopts a three blade design, including the outer blade, middle blade, and inner blade, making it sharper and more efficient, making it very suitable for cutting hard metal. 3. MULTIPURPOSE TOOL: This hole saw set is suitable for bench drills, magnetic drills, impact drills, etc. Very suitable for hard metals, stainless steel plates, iron, cast iron, wood, fiberglass, and other general plates. 4. HIGH ACCURACY AND EASY TO USE: TCT cemented teeth can quickly cut clean circular holes. Suitable for handheld electric drills, vertical electric drilling machines, and mobile belt magnetic drilling machines. 5. 6PCS BITS: There are 6 pieces drill bits in the package that can be used respectively to meet your different needs. With a storage box, these bits are easy to carry.