OLSON SAW CB50070BL 12-Inch Delta/Jet Band Saw Accessory Cool Blocks

For Delta 10" 28-140, 16" 28-560 3-wheel and 12" 28-190 Band Saws. Contains: 4 guide blocks 5/16" square x 3/4".Cool Blocks blade guides are made from a high tech, non-metallic composite material, "Graphite Impregnated Phenolic Laminate" which contains three synthetic dry lubricants that lubricate the blade but do not make it oily. The metal to metal contact made by old metal guide blocks creates heat and friction which cause premature blade wear and breakage. Made in USA.