Hex No.5 Self Drill Screw W16 SO 5.5 x 55 - 100 PCS (Heavy Section) SPANNER This means that Cobra is

This means that Cobra is an ultra-versatile model

8 Shank Diameter: 1/4 hex Diameter Imperial: 12

Best-in-class nails which offer optimum performance and the best quality finish

Three forward and three reverse rotation auto-stop modes offer increased efficiency when fastener is adequately loosened

It has a heavy-duty GRP weatherproof case which is rated to IP44

Hex No.5 Self Drill Screw W16 SO 5.5 x 55 - 100 PCS (Heavy Section) SPANNER This means that Cobra isUsed for attaching metal to heavy section steel (Max. 12mm) without the need to pre drill a hole. Exterior plating gives a reliable and durable corrosion resistant coating which resists 500 hours salt spray Head Size 8mm 5 16" Thread Type Self Tapping or Metric Fixed Washer 12mm Drill Point No. 3 or No. 5 Washer type G EPDM washer G = Galvanised Steel Plating Ruspert Salt Spray Resistance 500+ hours (UKAS accredited)