

RAM Mounts Diamond Ball Base with 2-Hole AMPS Pattern, C-Size (RAM-238U) pairs a C-size (1.5") rubber ball with a compact 61.7 × 33.3 mm (2.43" × 1.31") diamond plate. Its two holes, 48.6 mm (1.912") apart, follow the industry-standard 2-hole AMPS pattern, so the base fits a wide range of RAM device holders and cradles – or can be screwed straight onto a dashboard, console or other flat surface. Made of powder-coated marine-grade aluminium, it is also the ball base RAM supplies with the Tough-Mag magnetic base RAM-238-MAG88U.
📦 What's in the box – RAM-238U
- Diamond ball base – 61.7 × 33.3 mm plate, 2-hole AMPS, C-size (1.5") ball
💡 You might also consider a C-size double socket arm to connect it to your device holder, or an X-Grip holder for 7" tablets with C-size ball as a ready-to-use universal holder.
Key Features
- 2-hole AMPS diamond plate – 61.7 × 33.3 mm (2.43" × 1.31"), holes 48.6 mm (1.912") apart
- Two uses – drill-down base on a flat surface or adapter for holders with a matching hole pattern
- C-size (1.5") rubber ball – connects to any RAM C-size double socket arm, with near-infinite adjustment
- Load rating – up to 1.8 kg (4 lb) standard use; 1.4 kg (3 lb) heavy-duty use
- Material – powder-coated marine-grade aluminium
- Lifetime warranty – backed by RAM Mounts
Compatibility
- All RAM C-size (1.5") double socket arms
- RAM device holders and cradles with the 2-hole AMPS pattern (48.6 mm)
- RAM Tough-Mag 88 mm magnetic adapter (RAM-MAG88DU)
- Flat mounting surfaces (screw-on installation)
Technical Specifications
| Part Number | RAM-238U |
|---|---|
| Product Type | Diamond ball base (2-hole AMPS) |
| Connection | C-size (1.5") ball; 2-hole AMPS 48.6 mm (1.912") |
| Load Capacity | 1.8 kg (4 lb) standard use; 1.4 kg (3 lb) heavy-duty use |
| Material | Powder-coated marine-grade aluminium |
| Dimensions | Plate 61.7 × 33.3 mm (2.43" × 1.31") |
| Weight | 0.08 kg (0.18 lb) |
| Warranty | Lifetime warranty (RAM Mounts) |
| In the Box | Diamond ball base |
More RAM ball bases, socket arms and mounting kits 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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