After ring is placed on stretcher and tapered part is inserted, gentle tapping with mandrel causes ring to expand.
The Rathburn Ring Stretcher can quickly enlarge rings Works particularly well for rings size 8 1/2 or larger. Not recommended for use on stone-set
Rathburn Ring Stretcher 6-1/2 Inches - SFC Tools - 48-135
Ideal For Everyone: This Rathburn Ring Stretcher is ideal for both beginners as well as expert jewelers to increase the size of a ring. Notes: (1) Not
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For rings size 1 thru 8. Not for use on stone-set rings. 5 length. Simply tapping the end spreads the outer mandrel and stretches the ring.
Rathburn Style Ring Stretcher Small for Sizes 1 Thru 8
MegaCast Metal Ring Stretcher Rathburn 6-1/2 Inches