Specification Brand : Mardatt BulletPoint1 : WHAT YOU WILL GET: You’ll receive 40 sets M6 T slot drop in bolt kit, including 10pcs M6x12mm T-slot bolts, 10pcs M6x16mm T-slot bolts, 10pcs M6x20mm T-slot bolts, 10pcs M6x25mm T-slot bolts and 40pcs M6 flange nuts, all items are packed in a plastic box for easy storage and carrying. BulletPoint2 : QUALITY MATERIAL: The T shape stud sliding screws and flange nuts are made of quality carbon steel with nickel-plated finish for high hardness, wear resistance, corrosion resistance and oxidation resistance, which can be used for long-term. BulletPoint3 : EASY INSTALLATION: The T slot drop-in bolt can be inserted directly into the aluminum long holes of any mounting post, making it easy to connect the aluminum profile to other components. Please confirm the size of your aluminum profile or T-groove before order. BulletPoint4 : WIDE APPLICATION: The 30 series hammer head bolts are widely used for aluminum profile assembly, connecting solar modules, photovoltaic roof hooks, T-slot guide rails, lifting, metallurgy, mechanical equipment and power mechanical equipment assembly,etc. BulletPoint5 : RICH SIZES: There are 4 different sizes of T slot drop in stud screw bolt in the package, namely, M6x12mm, M6x16mm, M6x20mm, M6x25mm, multiple sizes and sufficient quantity provide you with many options, different sizes can meet your different needs in daily life. Color : Silver ExteriorFinish : Unfinished ExternallyAssignedProductIdentifier1 : 692559853222 ExternallyAssignedProductIdentifier2 : 0692559853222 GpsrSafetyAttestation : 1 GradeRating : 18-8 Stainless Steel ItemName : Mardatt 40 Sets M6 T Slot Drop-in Bolt, M6 x 12/16/ 20/ 25mm Hammer Head T-Slot Drop-in Stud Sliding Bolt Screw with Flange Nut for European Standard 30 Series Aluminum Profile ItemPackageDimensions_Height : 2 inches ItemPackageDimensions_Length : 6 inches ItemPackageDimensions_Width : 5 inches ItemPackageQuantity : 30 ItemTypeKeyword : t-slot-bolts Manufacturer : Mardatt ManufacturerGrade : standard Material : Carbon Steel MetalType : Carbon Steel ModelNumber : ST346-1213X134-000030 NumberOfItems : 40 NumberOfPieces : 40 PartNumber : M1739 ProductDescription : Mardatt 40 Sets M6 T Slot Drop-in Bolt, M6 x 12/ 16/ 20/ 25mm Hammer Head T-Slot Drop-in Stud Sliding Bolt Screw with Flange Nut for European Standard 30 Series Aluminum Profile