Seldén Ball Bearing Blocks (BBB) have stainless steel ball bearings and a glass fiber reinforced washer. A steel hoop that extends all the way down to the shaft provides high rigidity and strength.
- Series: BBB20
- Type: Single, female mitten
- MWL: 150 kg
- Breaking strength: 300 kg
- Max rope diameter: 6 mm
- Weight: 34g
- Disc: 20 mm
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