1. Carbon steel with nickel-plated, good looks, strong and durable.2. The T-nuts are easy to be rolled into the T slot of the aluminum profile.3. Application: Used in the construction of CNC routers, 3D printers, CNC laser cutters, CNC plasma cutting, robot projects, 3D engraving machines, etc.Specification:Package Content: 50pcs x Spring Nuts for Aluminum ExtrusionMaterial: Carbon SteelGrade: 8.8Thread Diameter: M6Slot Width: 8mm/0.31inchDimension: 20 x 11 x 8.5mm/0.79 x 0.43 x 0.33inch(L*W*H)Main Color: Silver.
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