The Mac Sub 11D Knife is suitable for spearfishing, scuba diving and fishing. It is a strong Stiletto style knife with a contoured handle and a double-edged blade. Made in Italy. It has a blade length of 11 cm (4.33 inches), with an overall length of 23 cm (9.05 inches). The strong Mac Sub 11D Knife has a double-edged blade with one serrated side. It is a durable knife with a safety scabbard that that has an O-ring at the rear to fasten the knife securely in place and to remove it one-handed if needed. The handle has a hole for use as a lanyard attachment loop. Made in Italy with state of the art equipment, unique moulds and quality presses. A very durable knife from a company that has been around for almost half a century and is known for its quality hunting and diving knives. The pointed tip makes this a great companion knife for all spear-fishermen. This knife is for spearos who want a spearfishing knife that can easily penetrate fish to dispatch them quickly.