Check the listing for details. Vortex Air Matte Black Frame/Matte Black Ring Spinning Single Foot Guide. Condition: New. Listed at 0.99 USD. * Light weight, strong flexible frames * Atlas Stainless Steel Frames * zero ring loss * black frames with black ss rings options * ideally pairs with Delta tops Matte Black Chrome Height A Height B Height C Weight Ring ID Foot Total Length VABBSF-4 VASF-4 3.60 mm 6.75 mm 7.50 mm 0.1 gm 3.18 mm 5.00 mm 9.10 mm VABBSF-5 VASF-5 3.80 mm 7.50 mm 8.15 mm 0.2 gm 3.90 mm 6.70 mm 12.60 mm VABBSF-6 VASF-6 5.75 mm 10.95 mm 12.05 mm 0.3 gm 5.25 mm 7.20 mm 12.00 mm VABBSF-7 VASF-7 5.50 mm 11.40 mm 12.20 mm 0.3 gm 6.05 mm 8.60 mm 15.30 mm VABBSF-8 VASF-8 5.80 mm 12.90 mm 13.85 mm 0.3 gm 7.20 mm 9.00 mm 15.00 mm VABBSF-10 VASF-10 7.60 mm 16.50 mm 17.60 mm 0.6 gm 9.06 mm 10.20 mm 18.60 mm VABBSF-12 VASF-12 8.70 mm 19.45 mm 20.85 mm 0.8 gm 10.75 mm 11.00 mm 18.50 mm VABBSF-16 VASF-16 10.90 mm 24.85 mm 26.15 mm 1.3 gm 13.95 mm 13.50 mm 23.00 mm VABBSF-20 VASF-20 12.50 mm 29.70 mm 31.10 mm 1.6 gm 17.90 mm 16.20 mm 29.50 mm VABBSF-25 VASF-25 17.50 mm 40.00 mm 41.10 mm 2.4 gm 22.65 mm 17.15 mm 32.20 mm VABBSF-30 VASF-30 17.60 mm 45.80 mm 47.40 mm 3.5 gm 28.85 mm 19.30 mm 38.50 mm