Gauge set includes 3 relief sizes (.016”, .018”, .020”) plus 3 additional sizes (.012”, .014”, .022”) to accommodate the desire for lower action or a heavier pick attack, made of stainless steel, high precision, without the annoying messy oil found in traditional feeler gauge sets, laser etched sizes (inches and millimeters) and non-slip instrument type, easy instructions With follow imprints on the handle and an innovative capo to assist, this gauge is part of our KEEP IT SIMPLE SETUP (KISS) method using our precision gauges and tool sets.