Shaft Coupling – 1/4″ to 1/4″ Important Data Set Screws: 3/32 Hex Number of Set Screws: 2 Length: 0.75 in / 19.05 mm Outer Diameter: 0.50 in / 12.70 mm Inner Diameter: 1/4″ Detailed Product Information Product Drawing 3D Render .Step See our entire line shaft parts and parts they are used with: Shaft, Knobs, and Mounting Accessories Capacitor Accessories All Available Vacuum Capacitors by Capacitance All Vacuum Capacitors About Max-Gain Systems, Inc. Max-Gain Systems, Inc. carries a full line of in-series, between series, right angle, T-shaped, quick connect, handie-talkie (BLACK), pigtails (coaxial jumpers), etc… RF adapters. Our RF adapter lines are constantly expanding. We keep our RF connector and adapter lines in stock. We ship both retail and wholesale quantities. To become a dealer / wholesale user, contact us with your potential usage. Max-Gain Systems, Inc. is the number one supplier of fiberglass round hollow tube, square tube and round solid rod to the antenna manufacturing industry. We produce millions of feet a year for hundreds of different industries including but not limited to:  marine / boating, aeronautical, agriculture, construction, emergency services, etc….  We have the unique ability to sell one piece or even a semi-truck full. Feel free to prototype using our fiberglass tube and rod then contact us for a quote on a production run. At production run quantities we can cut to your desired lengths at no additional charge, and we can also perform several different fabrications (example: drilling holes in precise locations along a tube) to ensure your delivered material is ready for assembly. We have several accessory items designed for our fiberglass including but not limited to: couplers, telescoping clamps, ferrules, etc…