Bought this to replace the standard lens in my K40 laser in addition to Si mirrors, and was impressed with the results. I had never heard of the Cloudray company but decided to take a chance as this lens was slightly cheaper than its counterparts (which also had names I hadn't seen). If this lens is indeed the CVD ZnSe advertised then the price (I paid 20) is pretty good. I've definitely seen a significant improvement in cutting/engraving performance over the standard lens and it's held up well so far.
2-Piece Metal Scribe Tool Set with Tungsten Carbide Tips - Engraved Pen for Glass, Wood, Ceramics, and Gold
4 Review
✂️ Zoom Precision Brother ScanNCut 3-in-1 Etching/Engraving Tool - Precise, Standard, and Dull Engraving Tips with Heart, Dog Tag, and Circle Stamping Blanks for Brother Scan and Cut Machines
4 Review
🔥 Afantti Electric Micro Engraver Pen: DIY Engraving Tool Kit for Metal, Glass, Ceramic, Plastic Jewelry - Scriber Etcher with 30 Bits, 8 Stencils
4 Review
🔧 Dremel 290-01 Engraver Rotary Tool with Stencils - Ideal Crafting Machine for Personalizing and Engraving Leather, Metal, Glass, and Wood, 120V, Black
5 Review
Meland Fuse Beads Kit - 24000Pcs Of 24 Color 5MM Iron Beads Set With Pegboards - Perfect Craft Gift For Kids On Birthdays & Christmas!
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
Get Bulk White Poly Mailers: 5000 Bags Of 9X12 Size By IMBAPrice
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