Hammer drive nail anchor: Type:mushroom head, into expansion bolt, S threaded Material: PA, PE Size: 5*30, 6*40,6*60, 6*80mm Hammer drive nail anchor:Type:mushroom head, into expansion bolt, S threadedMaterial: PA, PESize: 5*30, 6*40,6*60, 6*80, 8*60, 8*80, 8*100mm OEM is welcome Hammer drive nail anchor