Tooltos 2-in-1 Ring Stretcher Expander and Reducer | HK Size 6-33 Heavy Duty 12kg Gray
- 99 in stock
Description
- 2-in-1 Expander and Reducer — Expand rings using the 6-segment spline mandrel (HK sizes 6–33) and reduce rings using 8 reduction dies (16–25mm) in one machine.
- Largest Reduction Capacity — Reduction dies reach up to 25mm — the largest reduction range across all Tooltos ring stretcher models.
- Heavy-Duty 12kg Construction — Heavier cast iron body than standard models (9–10kg) for greater stability and rigidity during ring resizing work.
- 14 Expansion Accessories Included — More complete accessory set than standard models for a wider range of ring forming tasks.
- 6-Segment Spline Mandrel — Numbered segments cover HK sizes 6–33 for precise, consistent ring expansion.
- Bench Mountable — 4 pre-drilled holes for secure workbench installation. Reversible base plate for switching between expanding and reducing functions.
The Tooltos HK 6-33 Gray Ring Stretcher Expander and Reducer is the heaviest and most capable model in the Tooltos ring stretcher lineup. The 12kg cast iron body provides greater stability than standard 9–10kg models, the reduction dies reach up to 25mm — the largest in the range — and the 14 expansion accessories offer a more complete setup for professional jewelry repair shops handling a wide variety of ring sizes and styles.
Tooltos Ring Stretcher Full Model Comparison
| Feature | HK 6-33 Gray (This) | HK 1-33 | HK 6-36 | US 1-33 |
|---|---|---|---|---|
| Size Standard | HK | HK | HK | US |
| Expanding Range | HK 6–33 | HK 1–33 | HK 6–36 | US 1–33 |
| Max Reduction | 25mm | 23mm | 22mm | 24mm |
| Machine Weight | 12 kg | 9.6 kg | 9.5 kg | 9.3 kg |
| Expansion Accessories | 14 pieces | Standard | Standard | Standard |
| Best For | Heavy-duty use, largest rings, max reduction | HK standard, smaller sizes from 1 | HK standard, larger sizes to 36 | US market, widest US range |
Best For / Not For
| Best For | Not For |
|---|---|
| Heavy-duty professional jewelry repair shops HK-sized rings requiring reduction up to 25mm Larger ring sizes (HK 6–33) Plain band gold, silver and platinum rings Shops needing maximum stability and rigidity |
Stone-set rings (risk of damaging settings) Steel or titanium rings US-sized rings (use US 4-14 or US 1-33 models) HK sizes below 6 (use HK 1-33 model) Rings requiring reduction beyond 25mm |
Technical Specifications
| Material | Cast Iron Body and High Carbon Steel Components |
| Size Standard | HK (Hong Kong) Ring Sizes |
| Expanding Range | HK Size 6–33 (6-segment spline mandrel) |
| Reduction Die Sizes | 16 / 17 / 18 / 20 / 21 / 23 / 24 / 25mm (8 dies) |
| Expansion Accessories | 14 pieces included |
| Machine Dimensions | 135 × 185 × 415mm |
| Machine Weight | 12 kg / 26.5 lb |
| Bench Mounting | 4 pre-drilled holes |
| Base Plate | Reversible (expander / reducer) |
| Color | Gray |
| Suitable Metals | Gold, silver, platinum, copper, brass and other non-ferrous metals |
Pro Tips
- Anneal the ring before expanding or reducing to reduce the risk of cracking, especially for work-hardened metals.
- Expand or reduce gradually in small increments — avoid forcing the ring to the target size in a single pass.
- Mount the machine securely to your workbench using the 4 pre-drilled holes — the 12kg weight provides excellent bench stability even without bolting.
- Inspect stone-set rings carefully before resizing — if in doubt, remove stones before expanding or reducing.
Frequently Asked Questions
Why is this model heavier than the other ring stretchers?
This model uses a heavier cast iron body (12kg vs 9–10kg for other models) for greater rigidity and stability during ring resizing. It is designed for professional repair shops handling high daily volume.
What is the maximum reduction size?
The 8 reduction dies reach up to 25mm — the largest reduction capacity in the Tooltos ring stretcher lineup.
Can I use this on stone-set rings?
Use caution. Expanding or reducing rings with set stones risks damaging the settings. Remove stones before resizing where possible.
What ring sizes can this machine expand to?
HK sizes 6–33 using the 6-segment spline mandrel.
Can this machine work on titanium or steel rings?
No. This machine is designed for non-ferrous metals only. Titanium and steel rings require specialist equipment.
What are the 14 expansion accessories?
The 14 expansion accessories are the size expansion segments used with the mandrel for ring expanding across the HK 6–33 size range. Contact sales@tooltos.com for details on specific accessory configurations.
What's Included
- 1 x Tooltos Ring Stretcher Expander and Reducer Machine (HK 6-33 Gray)
- 14 x Size Expansion Accessories
- 1 x Reduction Die Set (8 dies: 16–25mm)
- 1 x Control Lever
Support
For technical questions or order support, contact the Tooltos team at sales@tooltos.com. We typically respond within 24 hours.
