Ronstan Series 20 HL Block, Single, Loop Top RF20101HL SEALANTS for heavy load use the

for heavy load use the Block-shackle M

Forms a protective anti-corrosive film against the elements

"flying" type pulley 2:1 for  use with halyards

which cures on exposure to atmospheric moisture

specially formulated for use on aluminium hulls

Ronstan Series 20 HL Block, Single, Loop Top RF20101HL SEALANTS for heavy load use theIdeal for high load applications. Wear resistant sheave material, in lightweight, self lubricating polymer, is suitable for use with rope or wire. Can be fitted with a shackle in either of two planes to allow correct alignment of the block. Sheave 20 mm Max. Rope 6 mm Max. Cable 3 mm Pin mm M. W. L. 275 kg B. L. 550 kg Weight 14 g