Comprehensive HVAC core removal tool set Includes a core remover wrench, one wrench, and ten replacement cores for efficient maintenance and service. Userfriendly design Antislip metal knob provides a secure grip for precise control when working with R22, R410A, and other common refrigerants. Materials and durability Built from pure copper and carbon steel to withstand regular use in air conditioning line repairs. Efficient core removal Dual size 1/4 inch and 5/16 inch interface adapts to common core sizes, enabling quick removal and replacement without unnecessary tool changes. 23 practical use scenarios Residential HVAC service on R22 or R410A systems during routine maintenance or leak testing, enabling fast core removal and replacement. Commercial HVAC repairs where multiple core sizes are encountered, reducing downtime by accommodating different cores with a single tool. Onsite field maintenance in tight spaces, where the compact tool and secure grip help achieve precise core work without compromising control. Key attributes Function: core removal and replacement for refrigerant lines Compatibility: suitable for R22, R410A, and other common refrigerants Size: dual 1/4 inch and 5/16 inch interface Material: pure copper and carbon steel Performance: durable, reliable core removal for efficient service