Single block with upstand for max 10 mm rope, sheave Ø 50 mm, max working load 800 kg. Lewmar HTX series aluminium blocks features high load performance and reduced friction, and received several rave reviews even before its offocoal launch. Strong aluminium side cheeks ensure optimum load distribution and align the rope in case of offset load or wrong working angles. HTX blocks have much higher load resistance with the same diameter. Blocks have side thrust Torlon ball bearings.