We utilize our experience and expertise on all our products to prvide the best in the industry All our products feature premium components and are backed by the best team in the industry All products are engineered, assembled and tested in the USA We are trusted by millions of people for specialized products to meet their needs where they live, work and play Features- Use with angle grinders- Pack of 5 flap discsSpecifications- Max PSI 15- Gauge Diameter in 25- Connection Size in 14 Male NPT- Range PSI 0 15- Bourdon Tube Phosphor Bronze- Pointer Black enameled aluminum- Dial White aluminum- Case Material Grade B No 410 Stainless Steel- Connection Material 316 Brass- Movement Brass- Accuracy Grade B- Window Material Acrylic- Fill Material Glycerin- Reco mmended Use Air, gas, oil, water- Weight 1 lbs SKU: NRNTL13306