Bostitch 21° Galvanised Ring Shank Stick Nails 2.8 x 50mm (Pack 2000)Packs of 2000 Round head nails. These plastic collated stick nails traditionally have a full round head, while only giving marginally better holding power to clipped head nails, they are preferred by the construction industry. Collation is angled at 21 to accommodate the overlapping heads. Ring shank nails have a series of rings punched into the surface of the shank. Again a difference in the diameter of the shank is produced making it even more