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640 Pcs 304 Stainless Steel Bearing Balls Kit, 1mm-8mm Sizes - size: 640Pcs

640 Pcs 304 Stainless Steel Bearing Balls Kit, 1mm-8mm Sizes - size: 640Pcs

$14.87 USD
$14.87 USD
Sale Sold out
Taxes included. Shipping calculated at checkout.

About this item

  • PREMIUM 304 STAINLESS STEEL: Forged from high-quality 304 stainless steel, these bearing balls offer exceptional corrosion and rust resistance. Unlike standard carbon steel balls, they are suitable for use in humid or wet environments, ensuring long-lasting performance without surface degradation
  • 12 POPULAR SIZES IN ONE BOX: This comprehensive 640-piece kit includes 12 most-used sizes ranging from 1mm to 8mm. From tiny 1mm precision balls to larger 8mm ones, you'll always have the right size on hand for various mechanical repairs and household maintenance
  • PRECISION ENGINEERED & SMOOTH: Each steel ball is manufactured with high precision, featuring a perfectly round shape and a mirror-smooth surface. This reduces friction and noise during operation, making them suitable for high-speed bearing rotations and delicate DIY crafts
  • VERSATILE MULTI-PURPOSE UTILITY: A must-have tool for DIY enthusiasts and professionals alike. Well-suited for repairing bicycle wheel bearings, drawer slides, door locks, casters, and even as slingshot ammo or weight additives for valves and pumps
  • ORGANIZED & LABELED STORAGE: Comes in a durable, transparent storage case with individual compartments for each size. Each slot is clearly labeled with the corresponding diameter, preventing sizes from mixing and making it effortless to find the exact ball you need in seconds
  • HIGH HARDNESS & DURABILITY: Constructed with superior hardness properties that resist wear and deformation over time, ensuring consistent performance in demanding applications including mechanical repairs, industrial equipment, and precision instruments
  • COMPLETE SIZE DISTRIBUTION: Includes 640 pieces with detailed quantity breakdown across 12 sizes from 1mm to 8mm, providing ample supply for multiple projects and repairs without the need for frequent reordering of individual sizes

Overview

  • Brand: LuKaiSen
  • Material: Stainless Steel
  • Item dimensions L x W x H: 7.48 x 3.94 x 0.67 inches
  • Item Weight: 200 g
  • Bearing Number: 1/2/2.5/3/3.5/4/4.5/5/5.5/ 6/7/8mm

Low stock: 10 left

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Reviews

  • ⭐⭐⭐⭐⭐

    Hannah Miller — Seattle, Washington
    I ordered several science activity supplies for projects at home. The product descriptions made it easier to compare the available options, and everything fit neatly into our learning space. Stemora made finding tools for hands-on activities feel simple and organized.

  • ⭐⭐⭐⭐⭐

    Daniel Foster — Austin, Texas
    I found a useful selection of electronics and robotics accessories for a beginner project. It was convenient to browse related components in clearly organized categories. I would consider shopping here again when planning another maker activity.

  • ⭐⭐⭐⭐⭐

    Lauren Bennett — Denver, Colorado
    The measurement and observation tools I selected worked well for the classroom activities I had planned. I especially appreciated being able to review the product details before ordering and choose items that matched the lesson requirements.

  • ⭐⭐⭐⭐⭐

    Jason Parker — Portland, Oregon
    I purchased a few storage items and small tools for organizing my maker workspace. The products helped keep components, wires, and project materials easier to sort and access. The overall shopping experience was straightforward and convenient.

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FAQ

What types of products does Stemora offer?


Stemora offers supplies for science experiments, microscopy, biology learning, measurement, laboratory organization, electronics, robotics, coding education, 3D printing, maker projects, and classroom activities. Available products and specifications may change over time.

Are Stemora products suitable for children?


Recommended ages vary by product. Please review the product description, manufacturer guidance, included warnings, and required skill level before purchasing. Products containing small parts, tools, electrical components, glass, or chemicals may not be suitable for young children.

Is adult supervision required?


Adult supervision is recommended for children and students, especially when using electrical components, sharp tools, heated equipment, glassware, small parts, or experiment materials. Customers are responsible for following all product instructions and safety precautions.

Can these products be used at home and in classrooms?


Many products may be suitable for classrooms, home learning, science projects, maker spaces, and hobby activities. Suitability depends on the specific product, learning environment, user experience, and intended activity.

How can I check what is included with a product?


Please review the product title, description, specifications, images, package quantity, and included-components section before ordering. Items shown for demonstration or scale in product images may not always be included.

How do I know whether an electronic or robotics part is compatible?


Check the listed dimensions, voltage, connector type, board compatibility, operating requirements, and supported platforms. Compatibility is not guaranteed unless it is specifically stated on the product page. Contact us before ordering if you need clarification.

When will I receive tracking information?


Tracking information is generally provided within 3–5 business days after an order is confirmed. In some cases, processing may take approximately 7–8 business days. Delivery may require an additional 4–5 business days after tracking becomes available, depending on the carrier and destination.

Why did my order arrive in separate packages?


Products in the same order may be shipped from different fulfillment locations. As a result, items may arrive separately and have different tracking numbers. You will not be charged additional shipping fees solely because an order is divided into multiple packages.

Can I change or cancel my order?


Contact us as soon as possible at vaioamaonaoak@gmail.com. We will try to assist, but changes or cancellations cannot be guaranteed once an order has entered processing or has been shipped.

What should I do if an item arrives damaged, defective, or incorrect?


Contact us promptly at vaioamaonaoak@gmail.com with your order number, a description of the issue, and clear photographs of the item, packaging, and shipping label. Please retain the product and original packaging while we review your request. Eligibility and available resolutions are subject to our Return & Refund Policy.

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