CTA Tools 2862 Dual Clamp Cam Tool is designed to allow belt replacement to be done by one person and prevents damage caused by mistiming. The patented tooth design works with a wide range of cam gear sizes from 4 - 6-Inch (101 - 152-millimeters) and configurations up to 3-Inch (76-millimeters) apart. Use one on dual cam engines and two on quad cam engines. It features a compact size for the confined spaces of east/west engine compartments and large locking knobs. Heavy-duty, industrial-grade polymer construction allows for strength and durability. Whether tuning up your ‘68 Corvette or changing the oil on a John Deere tractor, CTA can supply you with the tools needed to do the job.