1/2" diameter (13mm)

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6g Stainless Circular Barbell (internal)
6g Stainless Circular Barbell (internal) Circular Barbells 6g - 3/8" diameter (10mm) - 6mm balls Stainless Steel

6g Stainless Circular Barbell (internal)

3/8"-1"
$8.98
each
6g Snap-fit Captive Bead Ring
6g Snap-fit Captive Bead Ring Captive Bead Rings 6g (4mm) - 3/8" dia (10mm) - 6mm ball Stainless Steel

6g Snap-fit Captive Bead Ring

3/8"-1"
$7.98
each
6g Black Circular Barbell (internal)
6g Black Circular Barbell (internal) Circular Barbells 6g - 15/32" diameter (12mm) - 8mm balls Black

6g Black Circular Barbell (internal)

1/2"-7/8"
$9.98
each
6g Spring-Loaded Captive Bead Ring
6g Spring-Loaded Captive Bead Ring Captive Bead Rings 6g (4mm) - 1/2" dia (13mm) - 6mm ball Stainless Steel

6g Spring-Loaded Captive Bead Ring

1/2"-5/8"
$9.98
each
6g Titanium Circular Barbell by Anatometal
0g Titanium Circular Barbell by Anatometal Circular Barbells 0g - 1/2" diameter (12.7mm) Barbell Only (no balls)

6g Titanium Circular Barbell by Anatometal

3/8"-1"
From $44.60
each