While single ply off billets are common in the industry, as a matter of policy and safety,
ASMA recommends that single ply leather off billets not be used. It has been noted that the single ply leather off billets have a tendency to have a high failure rate. If single ply leather off billets are to be used it is recommended that they be made of heavy ( 13/14 oz+ ) skirting leather.
ASMA recommends that only heavy duty nylon (1 3/4" wide and 6000+ lbs per 1" width tensile strength) that is doubled and stitched should be used for a off billets.
IT IS HIGHLY RECOMMENDED THAT NO POLYPROPYLENE BE USED EVEN IF DOUBLED AND STITCHED.