Style 1581 fiberglass tape is the 8.9 oz/sq yd 8 harness satin weave fiberglass cloth. Buy 1581 in 3" wide tape rolls. The satin weave 1581 is a much tighter weave than the plain open weaves common with fiberglass tapes but being a satin weave is still conformable. The 1581 3" tape is finished in the universal silane 627 and is good for any resin. All rolls are 50 yards each. This is top quality fiberglass tape made in the U.S.