This device has 35 mm (0.188”) holes in the base so it can be mounted to a bench or work table with wood screws (not included). Use caution when stretching rings with set stones, or stretching rings more than 1 size from original size.
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This hydraulic exhaust pipe expander is a 10-ton manual tool for stretching copper and aluminum tubes. It comes with 4 dies and 2 storage cases, making it easy to use and store for car repair professionals. Age.
VEVOR Hydraulic Exhaust Pipe Expander 1-5/8 to 4-1/4 Size 10 T Manual Hydraulic Pipe Stretcher w/4 Dies and 2 Storing Case for Copper Aluminum
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Ring Stretcher Ring Expander Sizing Machine Roller with 13Pcs Highly Polished Rollers Accessory Jewelry Making Tool for Jeweler - AliExpress