Boning - Continuous Steel Spiral Boning Per 50-LB Roll (Approx.800 YDS) - WholesalePriced per 50 LB roll (Approx. 800 yards). Price is 45% discount over the yardage pricing. Continuous spiral steel boning. Allow 6 8 weeks for delivery. May be available sooner, but may not. Need less? See our 12 yard roll product page for 10% off per twelve yard roll OR see our large order page for 20% off eight 12 yard rolls. Need even less? See our yardage pricing page.