The VT Prusik is a versatile open-end Prusik. It performs well when used for ascending, self-belay while rappelling, as a traveling rope grab, or in conjunction with a Prusik minding pulley in haul systems. It has a tough, heat resistant Technora aramid sheath over durable nylon core strands. The core in this kernmantle design keeps the VT from flattening and binding up. A computerized large gauge sewing machine is used to bar tack a devilishly strong stitch with Technora thread. This thread / stitch combination yields superior strength and overall durability. Manufactured in the U.S.A.