Ronstan's Series 20 All Purpose Blocks are an economical block of lightweight, durable construction. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets accept fixing screws, shackles or can be used to add a becket for extra purchase.
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Specifications
| Bearing type | Plain bearing |
| Recommended line - Max Ø (mm) | 5 |
| Sheave Ø (mm) | 20 |
| Sideplate material | Stainless Steel |
| Ratchet | No |
| Sheave material | UV stabilised acetal |
| SWL (kg) | 150 |
| NBL (kg) | 450 |
| Weight (g) | 10 |
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