QUICK ANSWER
Buy the official nib kit for a worn tip; use the complete B751C pen listing for a broken body.
Bigme's official store currently offers two relevant products: a complete capacitive pen with a B751C model option, and a replacement-nib kit with a B751C-specific option. It does not list the pen cap, clip or side buttons as separate products.
If one of those small casing pieces has broken, keep every loose part, photograph the damage and email aftersales@bigme.vip before gluing, opening or modifying the pen. Ask whether Bigme can supply the individual part; if it cannot, the complete pen is the documented replacement route.
IDENTIFY THE FAILURE
Match the remedy to the damaged part
Bigme lists a replacement-nib kit with a B751C-specific option. Choose the B751C variant rather than assuming another model uses the same nib.
Bigme does not currently list these pieces separately in its official accessory catalogue. Ask after-sales support whether a service part is available; otherwise the official route is a complete replacement pen.
A complete replacement is the safer route. Tape or glue near moving buttons can change their travel and may make a later support assessment harder.
Do not buy cosmetic parts first. Record exactly which functions fail and contact support, because a button, nib and whole-pen failure need different remedies.
Take one clear photograph of the whole pen and close-ups of both the damaged area and any loose pieces. Include the tablet model, order number and country of purchase in your support message. That gives Bigme enough information to distinguish a missing service part from a complete-pen replacement.
OFFICIAL OPTIONS
Bigme's catalogue separates the pen from the nib kit
The complete accessory is listed as “Capacitive pen for 7inch Series”. Its model selector includes B751C and B7 Pro. Select B751C deliberately; the shared product page does not say that every component from the two versions is interchangeable.
The separate nib listing includes an “Exclusive for B751C” option. That is the appropriate official item when the replaceable writing tip is worn or damaged but the body, cap and buttons remain secure.
BEFORE YOU ORDER
Check the model selector, total cost and seller
- Confirm the tablet says B751C.B751C S and B7 Pro are distinct options elsewhere in Bigme's accessory catalogue. Match the listing to the exact device rather than to screen size alone.
- Choose the model variant before adding it to the basket.Bigme places more than one pen model on the same page. Recheck the selected option at checkout.
- Compare a nib kit with a complete pen.A loose or damaged tip does not require a new body. A broken cap, button or barrel is not fixed by new nibs.
- Check shipping and import costs.The official pages show product prices separately from the final destination-dependent total. Review the checkout total before paying.
- Keep the order record.Save the confirmation and photograph the replacement when it arrives, especially if support has confirmed compatibility by email.
WARRANTY REALITY
A warranty badge does not guarantee that a broken accessory is covered
The pen and nib product pages display a one-year warranty label. Bigme's general warranty policy is narrower: it excludes accessories and consumables, natural wear, user-induced damage, outside force and damage connected with unauthorised dismantling or repair.
Those statements leave the outcome dependent on what failed and why. A manufacturing defect and a cap damaged by impact are not the same claim. Ask Bigme to confirm coverage in writing before sending anything back or attempting a repair.
Adhesive can enter a button gap or make the pen impossible to open cleanly. Store the small pieces in a labelled bag and wait for Bigme's reply unless the pen is already out of warranty and you accept the risk of a DIY repair.
CONTACT BIGME
Ask one precise question and attach the evidence
Email Bigme's after-sales address with the subject “B751C stylus replacement part”. State which part failed, whether the pen was dropped or opened, and whether it still writes. Attach the photographs, proof of purchase and serial or order details. Ask whether Bigme can supply the exact cap or button before purchasing a complete pen.
If Bigme says the small part is unavailable, use the B751C option on the official complete-pen page. Treat community-made or 3D-printed pieces as unofficial experiments: verify dimensions yourself and do not assume they preserve button movement or warranty coverage.
SOURCES
Authoritative documentation
Replacement availability and warranty wording were checked on September 16, 2026 against Bigme's current official store and policy.