Diameters 2.6, 3mm and 3.7mm to suit standard and special applications Rolled ballistic points For Sympafix GT/C70 and GT4C Also fits Powers® C4 Available with rolled ballistic point or evenwith conical point (XP nails). Supplied as standard with matching gas canister. No special requirements for storage or transport. For higher shear loads use HD nails, for hard concrete XH or XP nails and for (very) hard steel XP nails.