

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The PROTO J66508MP is a 12-point impact socket designed for use with 1/4 inch drive impact wrenches and ratchets. Built from alloy steel, this socket delivers the toughness needed to handle high-torque impact applications without cracking or deforming under load. It measures 1-19/64 inches overall length and fits an 8mm fastener. The universal style makes it a practical choice for technicians working in tight engine bays, electrical panels, HVAC equipment access points, or any application where a compact, durable 8mm socket is required. Licensed tradespeople and experienced DIYers rely on this socket for consistent performance across daily production and service work.
This socket suits residential and light commercial service environments where 1/4 inch drive tooling is standard. Common install scenarios include fastener removal and installation on small mechanical assemblies, equipment covers, and control components across HVAC, plumbing, and electrical trades. The compact overall length of 1-19/64 inches is well-suited for confined spaces where full-size drive tools cannot reach. It conforms to ASME B107.2 specifications, meeting recognized industry standards for impact socket dimensional and performance requirements.
Designed as an OEM-style replacement and general-use impact socket for 1/4 inch drive impact wrenches and ratchets requiring an 8mm metric socket.
This socket is installed and used by mechanics, HVAC technicians, electricians, and plumbers working with 1/4 inch drive impact tools. Ensure the socket is fully seated on the drive anvil and the fastener before applying impact torque. Do not use impact sockets on non-impact hand ratchets in applications requiring precise torque control without a torque-limiting device. Inspect the socket for cracks or deformation before each use and retire any damaged tooling immediately.
Thanks for subscribing!
This email has been registered!