

RAM Mounts Double Socket Arm with Diamond Ball Plate, C-Size, Long (RAM-103-D-238U) is a C-size (1.5") ball-and-socket assembly with one open socket end. The long double socket arm (232 mm overall, 203 mm socket to socket) holds a diamond ball base with the AMPS 2-hole pattern, which serves as an adapter for a device holder or as a drill-down base. Attach the open socket to any C-size RAM base or cradle with a 1.5" ball to complete the mount.
📦 What's in the box – RAM-103-D-238U
- Double socket arm (C size, long) – 232 mm overall, 203 mm socket to socket
- Diamond plate with C-size ball – 62 × 33 mm, AMPS 2-hole pattern (48.6 mm)
💡 To get started, you might also consider a C-size base for the mounting surface, such as a C-size double U-bolt base for rails, a medium Tough-Claw clamp or a C-size square post clamp.
Key Features
- Patented ball-and-socket system – C-size (1.5") rubber balls adjust at both ends of the arm and damp shock and vibration
- One open socket – attaches to any C-size base or cradle with a 1.5" ball, so you can build exactly the mount you need
- Long double socket arm – 232 mm overall, 203 mm socket to socket, with an easy-to-adjust knob
- AMPS 2-hole pattern – the diamond plate has two holes 48.6 mm apart and fits most RAM cradles
- Load capacity – 1.8 kg (4 lb) for standard use, 1.4 kg (3 lb) for heavy-duty use
- Durable construction – powder-coated marine-grade aluminium, backed by RAM's lifetime warranty
Compatibility
- All RAM C-size (1.5") ball bases, adapters and holders
- Cradles with the AMPS 2-hole pattern (48.6 mm)
Technical Specifications
| Part Number | RAM-103-D-238U |
|---|---|
| Product Type | Socket arm with ball plate |
| Connection | RAM C-size ball (1.5"); AMPS 2-hole (48.6 mm) |
| Load Capacity | 1.8 kg (4 lb) for standard use, 1.4 kg (3 lb) for heavy-duty use |
| Material | Powder-coated marine-grade aluminium |
| Dimensions | Arm 232 mm overall (203 mm socket to socket); diamond plate 62 × 33 mm |
| Weight | 0.85 kg (1.87 lb) |
| Warranty | Lifetime warranty (RAM Mounts) |
| In the Box | Double socket arm (C size, long), diamond plate with C-size ball |
More RAM cradles, ball bases and socket arms are waiting in our Mobile Terminal Accessories collection. Planning a vehicle or forklift installation, or ordering for a whole fleet? Contact us for project support and volume pricing.
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