Ultralight Buoyancy Arms - Long
- Free NZ shipping over $250
- Manufacturer's Lifetime Warranty
Pairs well with
Ultralight's Buoyancy Arms come in various sizes. Large Buoyancy Double Ball Arm segments were designed for the heavy DSLR housings and video housing. They are 2" in diameter and constructed the same as the regular buoyancy arms.
They range in size from 8" to 16" in 2" increments to be able to add just the amount of buoyancy you need to offset the weight of the housing and strobes or lights.
Amount of buoyancy per arm length:
- 8" (DB-BL08) 4.5 oz / 128g
- 10" (DB-BL10) 8 oz / 227g
- 12" (DB-BL12) 11 oz / 312g
- 14" (DB-BL14) 14.8 oz / 420g
- 16" (DB-BL16) 1 pound 2 oz. / 510g
Specifications
Regular Double Ball Arms
| Arm Sizes |
Length | Weight on Land* | Weight in Water* |
| 5 & 5 | 16" | +13 oz. | +8.5 oz. |
| 5 & 8 | 19" | +14 oz. | +9.5 oz. |
| 8 & 8 | 22" | +15 oz. | +10.5 oz. |
| 8 & 12 | 26" | +15.75 oz. | +11 oz. |
| 12 & 12 | 30" | +16.5 oz. | +11.5 oz. |
| 12 & 16 | 34" | +17 oz. | +12 oz. |
| 16 & 16 | 38" | +18 oz. | +12.25 oz. |
Large 2" Diameter Buoyancy Arms
|
Part number |
Length |
Weight out of water |
Buoyancy in water |
Length |
Weight out of water |
Buoyancy in water |
| DB-BL08 | 8" | 6.8 oz. | 4.5 oz. | 203mm | 195g | 128g |
| DB-BL10 | 10" | 7.7 oz | 8 oz. | 254mm | 218g | 227g |
| DB-BL12 | 12" | 8.4 oz. | 11 oz | 305mm | 238g | 312g |
| DB-BL14 | 14" | 9.1 oz. | 14.8 | 356mm | 259g | 420g |
| DB-BL16 | 16" | 9.8 oz | 18 oz. | 406mm | 280g | 510g |
Use this table, if you are replacing arm segments you already own. Weigh your complete system in water with housing, arms, and strobes to determine its weight in water, then look in the table on the buoyancy column, to decide on which arm length(s) you need for the buoyancy you want.
| Arm section lengths | Length | Weight out of water | Buoyancy in water | Length | Weight out of water | Buoyancy in water |
| 8 & 8 | 22.75" | 1 lb 7.9 oz | Neutral | 577mm | 676g | Neutral |
| 8 & 10 | 24.75" | 1 lb 8.7 oz. | 2 oz. | 628mm | 698g | 50g |
| 10 & 10 | 26.75" | 1 lb 9.5 oz. | 7 oz. | 680mm | 723g | 198g |
| 10 & 12 | 28.75" | 1 lb 10.2 oz. | 8.3 oz | 731mm | 742g | 235g |
| 12 & 12 | 30.75" | 1 lb 11 oz | 11.2 oz | 780mm | 762g | 318g |
| 12 & 14 | 32.75" | 1 lb 11.7 oz. | 15 oz. | 832mm | 783g | 425g |
| 14 & 14 | 34.75" | 1 lb 12.4 oz. | 1 lb 3 oz. | 884mm | 804g | 539g |
| 14 & 16 | 36.75" | 1 lb 13.3 oz. | 1 lb 6 oz. | 935mm | 827g | 624g |
| 16 & 16 | 38.75" | 1 lb 13.9 oz | 1 lb 9 oz. | 980mm | 846g | 709g |
Use this table if you are replacing your complete arms or do not have any arms for your system. Weigh in the water your housing and strobes and any other equipment you plan to use, then look in the table, buoyancy column, to decide on which arm set you want for the buoyancy you want.
International Shipping
Yes, we ship to Australia! We use DHL Express, which should take 1-3 business days depending on your shipping address. Our checkout will automatically determine your shipping cost.
Outside of Australia? Contact us and we can organise.
You can find more information about shipping on our FAQs page.
How long will it take for my order to arrive after I make payment?
That depends on where you live and whether we have an item in stock or not. While we do have many items in stock, we don't carry everything. (For example, we do not stock most housings or ports as there are just too many!) If you need an item in a hurry, it's a good idea to contact us and find out if your item is in stock, or if we can get it in a hurry - we often can!
If we have it in stock, we can usually send it out as soon as we receive payment (1-3 business days), or you can pick it up. If an item is not in stock, we'll need to order it from our suppliers, which means it can take 1-2 weeks to arrive at your door (usually closer to a week).
Sometimes delivery can take longer, if our manufacturers are out of stock, for example, but this is unusual - we let customers know as soon as possible if something like this happens.
How do you ship my NZ orders?
We use New Zealand Post Courier to ship orders. New Zealand Post aims for next-day delivery nationwide between major towns and cities in the North Island. South Island delivery can take two days. If you require next-day delivery in South Island, choose the express shipping option for the South Island. If you spend over $250 get your shipping for free!
