ANTDM R134a Octagon Socket Set — 3/8in Drive High & Low Side, Cr-V Durable

ANTDM's High & Low Side Octagon Socket set is a two-piece 3/8" drive tool designed to engage R134a A/C service port valves precisely and securely.

This compact dual-socket kit replaces OE parts 98134 and 98234 and gives technicians a fast, slip-resistant way to access high- and low-side R134a Schrader-style valves. Machined as eight-sided octagon sockets for a snug fit, the pair works with any standard 3/8" drive ratchet or extension and is built from chrome vanadium steel for corrosion and wear resistance. The set is intended for automotive HVAC service tasks where a correct fit avoids valve damage and speeds up routine diagnostics and refrigerant charging.

How do these sockets ensure a correct fit on R134a service ports?

The octagonal internal profile is sized to match R134a port valve nuts precisely, so the wrenching surface is distributed evenly around the valve. That minimizes rounding and slipping compared with open-end or adjustable wrenches. Because they're purpose-made for these valves, adapters are not required.

• 8-sided octagon internal geometry for secure engagement
• Sized for standard R134a high- and low-side valve nuts
• No adapter required — direct 3/8" drive connection
• Reduces risk of valve cap or nut damage during service

What materials and construction extend tool life?

ANTDM manufactures the sockets from chrome vanadium (Cr-V) steel and applies heat treatment for toughness. The material choice resists corrosion, wears slowly under repetitive torque, and retains shape under typical workshop loads. A protective finish helps prevent surface rust when stored in toolboxes or service carts.

• High-strength chrome vanadium alloy for durability
• Heat-treated for improved toughness and fatigue resistance
• Corrosion-resistant finish for long-term reliability
• Manufactured to resist deformation under normal workshop torque

Which sizes are included and how do they speed up repairs?

The kit contains two distinct sockets: one sized for the high-side service port and one for the low-side port. Carrying both in a compact set eliminates trips to swap tools or hunt for the correct size, letting technicians switch quickly between pressures during diagnostics and charging. The 3/8" drive compatibility fits common ratchets and torque handles used in auto shops.

• Two-piece combo: dedicated high-side and low-side sockets
• 3/8" drive fits standard ratchets, extensions, and breaker bars
• Streamlines workflow by eliminating adapters or improvised tools
• Compact set size for convenient storage in a service kit

How do I care for these sockets to keep them performing?

Simple maintenance ensures long life: wipe clean after use, store dry, and periodically apply a light rust inhibitor. Avoid exposing the sockets to strong acids or prolonged moisture, and use the correct 3/8" drive accessories to prevent side loading. Proper torque technique and avoiding hammer impacts will preserve the octagon profile.

• Wipe and store in a dry toolbox after each use
• Apply light oil or rust inhibitor periodically
• Use with correct 3/8" drive tools to avoid side loading
• Avoid hammer strikes and extreme over-torqueing

Who is this for: technicians, mobile HVAC service providers, and automotive DIYers who work on R134a air conditioning systems and want a purpose-built, reliable socket solution. Whether updating a shop’s AC toolbox or assembling a vehicle service kit, the ANTDM High & Low Side Octagon Socket set simplifies valve access, protects service ports, and speeds routine A/C maintenance.