CT-90 is a high-performance 4-in-1 cutting and tapping lubricant designed for metal working operations including cutting, tapping, drilling, and reaming on all tough metals including stainless steel. The 500 ml bottle provides a convenient, portable supply of premium lubricant that reduces friction, extends tool life, and improves surface finish quality. Ideal for electricians, panel builders, engineers, and metalworkers who require reliable performance on demanding jobs.