Acratech GXP Ball Head with Knob Clamp

$ 509.95

The lightweight 1 lb GXP Ball Head with Knob Clamp from Acratech has a 3-in-1 feature designed to have two more functions other than just your conventional ball head. The Arca-type clamp on the head is removable from its stem, and it is mountable in the reverse to the base of the ball head. With the clamp removed, the ball head's stem has the same 3/8"-16 mount as the base, which includes a reducer bushing. The clamp itself has a single bubble level that allows you to balance and level out the ball. At the same time, you can unlock the independent pan lock and rotate lenses as large as 400mm and equipment weighing up to 50 lb. Together with a laser-engraved numbered scale, you can precisely create panoramic images by turning the ball head at incremental stops. Converting the head back to a normal functioning ball head, you can increase or decrease the ball's tension via its separate tension control knob. Moving the clamp to a 90° angle enables you to use the head as a gimbal with long telephoto lenses that have tripod feet. The top of the clamp is also laser engraved with a scale, which allows you to balance a telephoto lens when at a 90° angle, and a detent pin located inside the clamp prevents the lens from sliding out if the knob locking mechanism is accidentally opened.

Box Contains

    Acratech GXP Ball Head with Knob Clamp
  • Reducer Bushing
  • Limited 10-Year Warranty

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Easy 30 Day Return Policy

If you are dissatisfied with your purchase for any reason, you may return it to Kellards within 30 days of the purchase date, subject to the conditions and exclusions below.

You may initiate a return or exchange by requesting an RMA at

Securely affix your return label to the outside of the shipping package. Return shipping fees are the responsibility of the customer. We recommend you ship via insured ground service with a tracking number. We cannot be responsible for lost packages.

Return Address

Kellards Return
3237 Greenpoint Ave.
Long Island City NY 11101

Eligibility Conditions

Please read conditions below. If all conditions are not met, Kellards reserves the right to refuse the return or to charge a minimum 15% restocking fee. All returned items must be in new condition, in their original unaltered box (including an intact UPC code) and must include all packing material, blank warranty cards, manuals and accessories. Kellards can only refund the original purchase price. Shipping and handling fees are nonrefundable.

Nonreturnable Items

  • Electronic software downloads
  • Opened consumable items (e.g., film, tapes, paper, bulbs, CD, DVDs, ink cartridges, etc.)
  • Underwater equipment that has been submerged

Defective or Damaged Items

Defective items may be repaired, exchanged or refunded at our discretion for the same model or manufacturer's equivalent model.


Please allow 3-5 business days for mail-in exchanges to be processed.

Refunds & Credits

Once we receive and inspect your item(s), we will credit your account. Please allow 5-7 days for a credit to appear on your account. In most cases, we will issue your refund in the same way you made the original purchase.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.