Very very reliable. My only problem is trying to make a quarter coin ring out of it. The 25mm "dome" (hollow) was great for tapering my rings. BUT - once I "reached" the 25mm dome, the next smaller size - around 20mm - was too small for my coin. I realize this is a very specific question, but thought anyone thinking about buying this coin ring might find this a helpful observation. I'm not even sure if there are other blocks with cavities between 20-25mm - maybe not. Also, it seems to be very durable. Needed a little cleaning but it's not critical.
Hands-Free Full-Page Magnifying Glass With LED Light For Easy Reading - Ideal For Elderly Users
30 Review
BENECREAT Four-Leaf Clover Metal Stamps - Perfect Tool For St. Patrick'S Gift!
4 Review
4X6 Oudtinx Steel Bench Block Anvil Jewelers Tool Metal For Jewelry Stamping 3/4 Inch Thickness
4 Review
NIUPIKA 3X Magnifier With 4 LED Lights, Hands Free Full Page Rectangular Reading Magnifying Glass - Flip Out Legs Stand Over Document
13 Review
25,000 Pcs Fuse Beads Kit By INSCRAFT - 26 Colors 5MM Including 127 Patterns & 4 Pegboards + Ironing Paper & Tweezers
37 Review
EuTengHao 1100Pcs Irregular Chips Stone Beads Natural Gemstone Beads Kit With Earring Hooks Spacer Beads Pendants Charms Jump Rings For DIY Jewelry Necklace Bracelet Earring Making Supplies
26 Review
Hedi 6Mm Purple Color Pearl Beads Rosary With 6Pcs Our Rose Our Facther Beads
31 Review
UCGOU White Poly Mailers 9X12 Inch Pack Of 200 - #3 Strong Shipping Bags For Boutique Packaging, Small Business, Books, And Clothes - Waterproof, Tear Proof, Self-Seal Adhesive Postal Envelopes
35 Review