ESP Carp Rig T6 8-12 lb Barbless 9 inch Tied on ESP Sinklink G4 Raptor Hooks ESP Carp Rig G4. Available in Barbed and Barbless. Tied to 9 inch (23cm) of E-S-P Sinklink, a Dyneema based braid which is smooth, strong and really sinks. - Individually breaking strain tested - Approx Size Guide for Hook Boilie: Hook size 10 to 14mm, Hook size 8 to 16mm.