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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 4 - Jul 9
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Description
BOCI Original Collimating & Focusing Lens (BLT421S / BLT310)Overview Original BOCI optical lenses for BLT series cutting heads, including BLT421S and BLT310. These OEM lenses restore precise beam quality with a quick, drop in replacement. Genuine BOCI parts; model correct fit Drop in replacement; no head modification required Stable performance for piercing and cutting Protected packing for safe international shipping Specification Details Supported models BLT421S, BLT310 Types Collimating lens Focusing lens
Overview
Original BOCI optical lenses for BLT-series cutting heads, including BLT421S and BLT310. These OEM lenses restore precise beam quality with a quick, drop-in replacement.
- Genuine BOCI parts; model-correct fit
- Drop-in replacement; no head modification required
- Stable performance for piercing and cutting
- Protected packing for safe international shipping
| Specification | Details |
|---|---|
| Supported models | BLT421S, BLT310 |
| Types | Collimating lens / Focusing lens |
| Weight (per variant) | 0.3 kg |
| Tax | Tax-free item |
| In the box | Lens ×1; protective packing |
Installation Notes
- Power off and cool down the cutting head.
- Clean the lens seat and ensure dust-free handling.
- Install the new lens; confirm correct orientation and sealing.
- Run focus/piercing calibration according to the BOCI manual.
Recommended with: protective windows (D34×5 or as required by head), ceramic rings, nozzle connector, single/double-layer nozzles.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1693 reviews
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Product Reviews
★★★★★ 5
One of the best shoes
Size: 9.5, Color: Black Polished Full Grain
Outstanding. Fashionable, most comfortable and good construction. No sines of use after quite some time. Highly recommended.
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Reviewed in the United States on March 21, 2026
★★★★★ 4
Quality shoe but with a slight squeak.
Size: 10 Wide, Color: Burgundy Polished Full Grain
Nice shoes with the classic Penny Loafer design. Fit was better than another brand I tried. Only reason not 5 starts is disappointment due to a slight squeak at times when walking.
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Reviewed in the United States on August 11, 2025
★★★★★ 5
Exact item ordered, quick delivery
Size: 9.5, Color: Black Polished Full Grain
I ordered these black Cole Haan penny loafers for casual wear with jeans, khakies, and even business casual with slacks and a jacket. They've always worked perfectly for these uses. The Cole Haan version is the most versatile and still meets my sophisticated look criteria. I wear a 9 1/2 M with almost all other shoes. I have found Cole Haan to run slightly wider and slightly shorter. This fit will work with thin and no socks and a little loose in width. . I'd likely order a 10 N next time. I tend to forget this but it runs consistent with me for Cole Haan. 5 stars for the shoe and service. My bad on the slightly off fit.
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Reviewed in the United States on January 8, 2025
★★★★★ 1
Poor quality control - maybe outlet store leftovers
Size: 11.5, Color: Burgundy Polished Full Grain
The two shoes were not the same size. They were both labeled 11 1/2 but one shoe was larger than the other and the fit was poor. I returned the first pair and ordered a replacement. This time the shoes were close to the same size but too loose and the left one has sewing issues. I've bought Johnston & Murphy for years because of the quality. These were to replace an existing pair of burgundy penny loafers that have finally worn out (even after several heal/sole replacements). That is the expected quality. I suspect Nashville Shoe Warehouse may be handling shoes that didn't measure up for the quality; more like an outlet mall than getting the J&M quality I've come to expect.
Update: went to Johnston & Murphy site to buy "direct" from the manufacturer. There were several recent reviews where the shoes were long and didn't fit properly. Genesco - please step up the manufacture / crafting of these classic shoes to the level of quality they used to have.
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Reviewed in the United States on July 21, 2025
★★★★★ 5
Really nice shoes
Size: 9, Color: Black Polished Full Grain
My husband enjoys wearing these shoes. Very classy looking. They fit well. They arrived quickly. He liked them so much he ordered another pair in a different color which have worked out just as well.
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Reviewed in the United States on February 3, 2026
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