Hellend, Omgekeerd 45 2 x 1 (3665)

Smoothing the Underside

The Slope, Inverted 45 2 x 1 (3665) is the builder's solution to gravity-defying designs. While standard slopes taper upwards, this "upside-down" slope tapers downwards and outwards, allowing you to create smooth, angled surfaces on the underside of your models. It is an indispensable piece for eliminating blocky steps beneath wings, fuselages, and hanging structures.

Aerospace and Sci-Fi Essentials

This part is a cornerstone of aviation and space themes. It is frequently used to sculpt the sleek chins of cockpits or the tapered hulls of spacecraft in themes like Classic Space and Star Wars. By lining these up, you can achieve the aerodynamic "swooshable" shape required for high-speed interceptors and cargo haulers.

Architectural Detail

Beyond vehicles, the 2x1 inverted slope is excellent for adding texture to buildings. It is commonly used to create decorative cornices under roof overhangs or to smooth the transition between a wall and a protruding window bay. Its versatility makes it a core component of our Slope Parts category.

Discover more in our Slopes & Wedges Collection.

LEGO® parts are intended for builders aged 4 and up. They may pose a choking hazard for children under 3 years old.