Allen's plain bearing nylon sheet blocks have been adopted by the laser class as the block of choice for use on mainsheet systems. The sailing block can be used in a wide range of applications.
Specifications:
| 30mm | 38mm | |
| Length | 69mm | 86mm |
| Line Size | 8mm | 10mm |
| Breaking Load | 250kg | 300kg |
| Safe Working Load | 140kg | 155kg |
| Weight | 23g | 45g |


