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Standard length on these is 185mm with a 10mm width, and the bidentate pattern cuts surprisingly clean on hardened steel — better for serrations than a standard file in most cases. We usually ship bulk orders within 15-20 working days, but for custom colors or OEM branding you'll want to tack on another week or so for tooling setup.
It's a 46-gram tool, so it's light enough for controlled hand use but the bearing steel core gives it decent rigidity under load. Most buyers ask about grit consistency first — we control that through precision milling, though we don't publish a specific mesh rating on the standard line. 3 to 5 working days for samples if you need to verify.
The flat cross-section is what makes it work for masonry drilling prep, actually — that shape provided better stability against spalling than a round profile would. One thing we don't recommend it for is aluminun finishing pass work, because the diamond grit can leave micro-scratches that are hard to polish out.
Stock colors vary by production batch, so if you need a specific shade for shop floor coding, just confirm that during order entry. We've had buyers request everything form bright orange to matte black, and it's pretty much the same lead time as standerd — no extra charge unless you need custom packaing.
Bulk pricing typically drops around the 500-unit mark, and our company can do mixed color lots within a single MOQ if that simplifies your inventory. What it does is give you better per-unit cost without forcing a full pallet of one color you might not move quickly.
Our COA covers dimensional tolerance and hardness testing, and we've got lab HPLC reports on request for teh diamond compound purity — though honestly, for bearing steel files that's overkill for most workshops. We've been running this HCLC185 line out of Hebei for about 4 years now, so production process is pretty dialed in.
The MOQ depends on the color and customization level. For standard colors, we start at 500 pieces. For OEM orders with custom branding, it's typically 1000 pieces, but we can discuss lower quantities for first-time trial orders.
Standard production takes about 15-20 working days after order confirmation and deposit. For OEM orders with custom color or packaging, add 5-7 days for tooling and sample approval. Rush orders are possible but may incur extra costs.
Yes, we can provide a mill test certificate for the bearing steel upon request. We also do in-house quality checks on every batch, including hardness testing and dimensional inspection, and can share the report with you.
The standard size is fixed for the HCLC185 model due to the precision milling process and bidentate pattern. However, we can customize the color, packaging, and branding. For non-standard dimensions, we'd need to assess feasibility and minimum order adjustments.
Standard packaging is in polybags or blister cards, then packed in export cartons. Yes, we offer OEM packaging—you can choose custom colors, logos, or even retail-ready display boxes. Just let us know the design and quantity.
