Uxcell 55-Degree Thread 20 Blades Screw Pitch Gage Gauge, 4mm to 48mm Material: Stainless Steel Screw Pitch: 4, 4 5, 5, 6, 7, 8, 9, 10, 11, 12,14, 16, 18, 19, 20, 22, 24, 28,40,48 Overall Size(Closed): 6.4 x 1.1 x 0.5cm / 2.5'' x 0.4'' x 0.2''(LWT) Color: As Picture Shown, Net Weight: 17g, Blade Number: 20 Package Content	: 1 x Screw Pitch Gauge