HARKEN 57mm High-Load Sheave, 727 Material_Aluminum This type of delivery system

This type of delivery system is not only faster for large jobs (less changing out of cartridges)

They keep the block aligned correctly by pushing the lashing line to the outer edges of the block's head

and available in a range of sizes and styles

FSE Dinghy Control

This Harken 096 Upright Lead Block is often used to lead spinnaker pole lift

HARKEN 57mm High-Load Sheave, 727 Material_Aluminum This type of delivery systemHigh load sheaves are offered as replacement parts or for use in special applications. Their bearing system combines sideload carrying balls with a PTFE composite bushing to carry radial loads. While not as free rolling as the standard Harken ball roller bearing system, this compact bearing system is extremely durable and perfect for carrying high loads in a restricted diameter. Note: Special Order Only