REISSER R2 CUTTER CSK BOX OF 200 WOODSCREWS 5 x 80mm Very sharp 25 degree point with the tread running to the end allowing immediate starting no need to prestart The sharp wide & deep thread penetrates into all timbers WITHOUT a pilot hole giving exceptional pullout resistance Specially hardened steel gives the R2 maximum tensile & torsional strength The invisible Reisser lubricant helps the screw drive in quickly & easily Available in full thread primarily for board materials & part thread primarily for pulling two pieces of timber together tight The reinforced collar under the head gives additional support ppreventing snapping The collar also allows a wide & deep pozi head to be inserted This reduces the risk of the bit jumping out & rounding off the edges also known as cam out Each batch is checked thoroughly to guarantee consistency of quality Yellow tropicalized coating with 20 times more rust resistance than standard BZP Bright Zinc Plated screws