Features Specification It's a great tool for replacing valve cores, which has high side and low side couplers. Features: Portable size for easy operation. Can inclose the high side and low side of couplers. With adjustable valve core puller to fit different needs. Excellent for replacing valve cores without discharging or reclaiming the system. Built-in ball valve, allows access to AC auto systems. Specifications: Material: Copper High Side Coupler Color: Red Low Side Coupler Color: Blue Compatibility: R134/R12 Red Remover Inner Hole: 1.6cm / 0.6" Blue Remover Inner Hole: 1.2cm / 0.5" Item Size: Approx. 11.5 * 3.4cm / 4.5 * 1.3in(L * W) Red Remover Weight: Approx. 163g / 5.75oz Blue Remover Weight: Approx. 167g / 5.89oz Package Size: Approx. 13 * 8 * 3cm / 5.1 * 3.1 * 1.2in Package Weight: Approx. 336g / 11.85oz Package List: 1 * Red Remover 1 * Blue Remover Package List 1 * Red Remover 1 * Blue Remover