BPV31 Bullet Piercing Tap Valve Kit Tool w/ Pressure Gauge for Home Refrigerator Product Feature: Material: The suit is made of high-quality rubber and aluminum alloy material, durable and practical, high-pressure resistance, and not easy to rust. Easy to Use: Built-in safety valve prevents accidental refrigerant discharge, 90-degree push-on and locking connectors with auto shut-off, includes a pressure gauge for easy viewing during use, compatible with 1/4" OD, 5/16 inch, 3/8 inch pipe. Easy to Install: just install it with a hexagon wrench. Replacement Part Numbers: AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31. Product Specification: Type: BPV31 Refrigerator Freezer Fluoridation Kit Tool Color: Blue, Silver, Glod Material: Rubber + Aluminum Alloy Overall Length: 48cm (19in) Pressure Gauge Size: 7.11cm (2.8in) Replacement Part Numbers: AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31 Package Included: 1 x BPV31 Refrigerator Freezer Fluoridation Kit