Low-friction Fiddle blocks build three- and four-part purchases. They come in a variety of configurations including Fiddles with Hexaratchets® and Cam-Matic® cleats on adjustable arms. Fast trim and release under high or low loads. Ratchets grip loaded sheets, yet allow line to be eased with complete control. They 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.