is a vintage 3/8" Drive Thumb Wheel Spinner Ratchet Adapter. This tool is designed to fit between a ratchet and a socket, allowing you to quickly hand-turn fasteners in tight spaces where there isn't enough room to swing a ratchet handle.
Type: Ratchet spinner / speed spinner
• Drive size: 3/8"
• Function: Allows fast rundown of nuts/bolts using fingertip rotation
• Design: Round, knurled top that spins freely, 1-3/8" Diameter
• Material: Forged steel, typically chrome‑plated
Made in USA: Built to professional-grade standards