these efficient blocks have an incredible working load for their small size

13mm (1/2") ID

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Ronstan Triple Block With Becket Series 40 RF45311 hose these efficient blocks have anBLOCK,TRIPLE&BECKET 40mm SERIES 40 BB ORBIT BLOCK Series 40 Ball Bearing ORBIT BLOCK FEATURES Ultra Lightweight Low friction 2 stage Orbital ball bearing system Highest working load in its class Low profile and compact High performance cleating Single inner cheeks for minimum weight & size Easily fitted and securely retained Dyneema Link head Sheave 40 mm Max. Rope 9 mm Max. Cable mm Pin mm M. W. L. 650 kg B. L. 1350 kg Weight 105 g