Fischer Concrete Screw Anchors - Carbon SteelSize: 3/8" x 4" The screws are listed on the box as 100mm long.The drill bit for the hole is 10mm.The head size on the bolt is 18mm.Model # FBS 10/15 S Box of 40These are new screws but not in the original box. I made the listing for 40 screws so that I could ship them in a USPS Small Flat Rate Box and offer free shipping. Each box will have a copy of the instructions on the original box.The pictures show that 50 screws are in t
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