Harken (57mm) 2.25 inch Hexaratchet Blocks Little Hexaratchets® grip loaded sheets, yet allow line to be eased with complete control. Fast trim and release under high or low loads. Ratchets feature Hardkote-anodized, Teflon®-impregnated eight-sided sheaves machined from solid aluminum for strength and corrosion resistance. Free-rolling Delrin® ball bearings, sheave and sideplates UV-stabilized with carbon-black additive for maximum protection. High-strength stainless steel straps reinforce blocks. Use the 043 reverse ratchet with the 019 single on spinnaker and jib sheets where ratchets must rotate in opposite directions and on/off switches face up. Use for: Mainsheets Jib sheets Spinnaker sheets Furling lines