Material: spring steel (65Mn) Size:we have stock for M6-M12 Finish:Black.zinc-plated safety fastener,safety rings,safety clip safety rings.safety clips.safety fastenerMaterial: spring steel (65Mn)Size:we have stock for M6-M12Finish:Black.zinc-platedMaterial: spring steel (65Mn)Size:we have stock for M6-M12Finish:Black.zinc-platedsafety fastener,safety rings,safety clips