Ring Stretcher & Sizing Kit — 7-Step Mandrel with Nylon Base Band, 6.5 Inch, Enlarges Rings
£19.99
Sale price £19.99Regular price
Secure checkout
Enlarges a plain band a size or so without hammering: the ring sits on the nylon band, the stepped mandrel is driven through it and the segments spread evenly. For jewellers and repairers.
Seven stepped segments, so the stretch comes in controlled stages
Nylon base band protects the shank from marks
Steel, 6.5 inch (16.5 cm) overall, knurled cap
For plain bands in gold, silver and brass; not for stone-set or hollow rings
Approx. 250 g
Built for: quick size-ups at the bench or counter. A full 2 to 14 bench stretcher and a sizing machine are listed separately.
In the box: 1 x stepped mandrel, 1 x nylon base band.
Only 5 left at the benchSame-day Birmingham dispatch on weekday orders before 2pm.
Our steel ring mandrels carry both UK alphabetical and US numerical scales unless the product specifically notes UK-only or US-only in the description. Hardwood and aluminium mandrels are unmarked — use a separate ring sizer to measure.
Can I hammer directly against the mandrel?
Steel mandrels yes — that is what they are designed for. Hardwood mandrels are for forming and finishing only; hammering against them dents the wood and marks the workpiece. Aluminium mandrels: light planishing only, no forging.
What is a stepped mandrel for?
Stepped (tiered) mandrels let you work batches of rings or bangles in fixed standard sizes — useful for production work where you are making matched pairs or a series. Tapered mandrels suit one-off resizing where you need every size in between.
How do I store it without rust?
Wipe with a light camellia or 3-in-1 oil after wet work or polishing, then store in a dry drawer or wall rack. A small silica gel pack in the drawer is cheap insurance against humidity in unheated workshops.
Drop your email for a WELCOME5 code — £5 off orders over £30, plus monthly bench-tested tool picks and buying guides from our Birmingham workshop. About one email a month, no spam.
Almost there
Use code WELCOME5 at checkout
£5 off your first order over £30. Check your inbox and confirm your subscription to join the monthly Bench Journal.
Cookies. Essential cookies keep the shop running; with your consent we also use analytics & personalisation cookies to improve it.
Privacy policy · change anytime in the footer.
Round Stepped Bangle Mandrel, Wooden, 8 Inch — Bracelet Shaping & Forming Jewellery Tool £17.99
Oval Mandrel Set, Mini, 6 Sizes 2×3 – 8×12 mm — Handle & Case for Wire Wrapping and Looping £29.99
Round Bracelet Mandrel, Cast Iron Steel, with Tang — 4 Steps, 2 to 2-3/4 Inch, 10 Inch £32.99
Bangle Forming Mandrel, Domed Square Profile — Natural Wood, 14 Inch, Bracelet Shaping £19.99
