HARKEN 51 mm Wire High Strength Thru-Deck Block, 310 Product Type_Shackles The 484 features a bronze

The 484 features a bronze sheave for added durability

Shackles are forged grade 316 stainless steel

Universal head allows one block to function as a front shackle

The sideplates are UV-stabilized

<p>Harken 57mm Carbo Cheek Ratchet Block for Line-shedding and a small mounting footprint with drain holes

HARKEN 51 mm Wire High Strength Thru-Deck Block, 310 Product Type_Shackles The 484 features a bronzeHarken 51mm Thru Deck High Strength Block allows lines through the deck and bulkhead. Harken's Lightweight, low friction blocks with high load composite bearings carry wire halyards and control line cascades. Side load balls reduce friction from twists or unfair leads on 304 311. 300 303 has thrust washers. Blocks open to allow passage of swaged wire. Hard Lube anodized sheave for strength and corrosion resistance. Cheek blocks include fasteners.