# Vac-U-Lock® Accessories – Knuckle Up

The Knuckle Up is a handheld Vac-U-Lock grip designed for users who want direct, precise control during use. The brass knuckle-inspired frame fits naturally between the fingers — four finger loops distribute grip evenly across the hand, eliminating wrist strain and giving you a stable, locked hold at any angle.

Where suction cup bases work best on flat surfaces, the Knuckle Up works best in your hand. It converts any Vac-U-Lock compatible dildo into a handheld toy with a grip that does not slip, shift, or require readjusting mid-use. The compact frame adds no significant length — the dildo sits directly above the grip, keeping the experience as natural as possible.

Compatible with all RealCock Toys dildos and any Vac-U-Lock® attachment worldwide.

**Key Features:**

-   Brass knuckle grip: four finger loops for a locked, non-slip hold
-   Converts any Vac-U-Lock dildo into a precision handheld toy
-   No surface required: use anywhere, any position
-   Compact frame: adds minimal length to your attachment
-   Compatible with all Vac-U-Lock® attachments including all RealCock dildos
-   Body-safe, easy to clean, travel-friendly

**Length** 5-3/4″ | **Insertable Length** 5″ | **Diameter** 4-1/2″ | **Material** ABS plastic

## Details

- **Price:** 46.0 USD
- **Vendor:** RealCock Toys
- **Type:** Vac-U-Lock System

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Black | 46.00 USD | In stock |

## Images

- VAC-U-LOCK® ACCESSORIES – KNUCKLE UP - Vac U Lock accessory for grip control
- VAC-U-LOCK® ACCESSORIES – KNUCKLE UP - Vac U Lock accessory for grip control

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> Source: [RealCock Toys](https://www.realcocktoys.com/products/vac-u-lock®-accessories-knuckle-up)
> Updated: 2026-06-05