For Delta 14" Band Saws. Contains: 3 guide blocks 1/2" x 1/2" x 3/4" and 1 guide block 1/2" x 3/8" x 1". Cool Blocks Band Saw Blade Guides replace standard metal or plastic guides and enhance cutting performance! They lubricate the band saw blade but do not make it oily. Cool Blocks are made of a non-metallic composite ma­te­ri­al– Graphite Im­preg­nat­ed Phe­nol­ic Lam­i­nate with three syn­thet­ic dry lubricants. Metal guide blocks create metal to metal contact, causing heat, friction, premature blade wear and break­age. Imitation plastic guides melt and offer no­ lubrication. Cool Blocks blade guides allow blades to run cooler and last longer with less friction. They improve the cutting per­for­mance of any blade width, but are most effective with 1/16″ and 1/8″ wide blades for tight radius work.