Heavy metal. The blackPack Steel Shots can flow smoothly during exercises when the blackPack is moved. The round surface of each steel ball makes for a smoother flow than any sand can offer. The Steel Shots have a diameter of 2.0 mm to 2.8 mm and are made in Germany. They are optimal for all blackPack sandbags. They are delivered in a strong plastic bag (dimensions: approx. 25 x 36 x 7 cm). Total weight: 25 kg (55 lb).
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we are very satisfied with our order. For intense club use, the equipment is always in perfect condition.
Congratulations for the quality of your products.
just wanted to let you know the I have set up both the endless rope trainer and the kinetic trainer on the rig. I have got to say that both pieces of equipment are outstanding mate - I should of purchased all 3 items earlier. I thought I would share some positive feedback - as both myself and my wife are really impressed with these items.
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Due to the high quality of our products, they can be cleaned with common disinfectants. Pay special attention to buy genuine aerobis products.