Blue Micro Pulley with 1-1/4" Nylon Sheave by CMI . Blue anodized aluminum sideplates, 1 1/4" nylon sheave, and stainless steel axle. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using up-to-date equipment, it ensures everlasting reliability and enduring value. This product is distinguished by total quality assurance, unsurpassed by anybody else.