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These high load ball bearing blocks have steel sides for strength.
They are ideal for halyards, tackles, runners in a dynamic, low load situation.
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Seldén BBB25 High Load Block 402-201-06R is a 25 mm single ball-bearing block with removable pin attachment. Its stainless-steel side plates provide high strength and stiffness, with stainless-steel ball bearings and a lightweight cage reducing friction under dynamic loads. Seldén specifies a safe working load of 400 kg, breaking load of 800 kg and maximum 5 mm line. The pin attachment provides a secure, compact connection point, making the block suitable for halyards, tackles, runners and other highly loaded control-line applications on dinghies and performance keelboats.
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